LayerState::makeInstance to return unique_ptr

diff --git a/include/rive/animation/animation_state.hpp b/include/rive/animation/animation_state.hpp
index aff5c3d..5cb0282 100644
--- a/include/rive/animation/animation_state.hpp
+++ b/include/rive/animation/animation_state.hpp

@@ -15,7 +15,7 @@
 
     public:
         const LinearAnimation* animation() const { return m_Animation; }
-        StateInstance* makeInstance(ArtboardInstance*) const override;
+        std::unique_ptr<StateInstance> makeInstance(ArtboardInstance*) const override;
     };
 } // namespace rive
 

diff --git a/include/rive/animation/blend_state_1d.hpp b/include/rive/animation/blend_state_1d.hpp
index 83d0695..e50c100 100644
--- a/include/rive/animation/blend_state_1d.hpp
+++ b/include/rive/animation/blend_state_1d.hpp

@@ -12,7 +12,7 @@
 
         StatusCode import(ImportStack& importStack) override;
 
-        StateInstance* makeInstance(ArtboardInstance*) const override;
+        std::unique_ptr<StateInstance> makeInstance(ArtboardInstance*) const override;
     };
 } // namespace rive
 

diff --git a/include/rive/animation/blend_state_direct.hpp b/include/rive/animation/blend_state_direct.hpp
index fd8f120..160f8de 100644
--- a/include/rive/animation/blend_state_direct.hpp
+++ b/include/rive/animation/blend_state_direct.hpp

@@ -5,7 +5,7 @@
 namespace rive {
     class BlendStateDirect : public BlendStateDirectBase {
     public:
-        StateInstance* makeInstance(ArtboardInstance*) const override;
+        std::unique_ptr<StateInstance> makeInstance(ArtboardInstance*) const override;
     };
 } // namespace rive
 

diff --git a/include/rive/animation/layer_state.hpp b/include/rive/animation/layer_state.hpp
index e957f9e..6e9b20b 100644
--- a/include/rive/animation/layer_state.hpp
+++ b/include/rive/animation/layer_state.hpp

@@ -36,7 +36,7 @@
 
         /// Make an instance of this state that can be advanced and applied by
         /// the state machine when it is active or being transitioned from.
-        virtual StateInstance* makeInstance(ArtboardInstance* instance) const;
+        virtual std::unique_ptr<StateInstance> makeInstance(ArtboardInstance* instance) const;
     };
 } // namespace rive
 

diff --git a/src/animation/animation_state.cpp b/src/animation/animation_state.cpp
index c279289..3d25d42 100644
--- a/src/animation/animation_state.cpp
+++ b/src/animation/animation_state.cpp

@@ -7,10 +7,10 @@
 
 using namespace rive;
 
-StateInstance* AnimationState::makeInstance(ArtboardInstance* instance) const {
+std::unique_ptr<StateInstance> AnimationState::makeInstance(ArtboardInstance* instance) const {
     if (animation() == nullptr) {
         // Failed to load at runtime/some new type we don't understand.
-        return new SystemStateInstance(this, instance);
+        return std::make_unique<SystemStateInstance>(this, instance);
     }
-    return new AnimationStateInstance(this, instance);
+    return std::make_unique<AnimationStateInstance>(this, instance);
 }
\ No newline at end of file

diff --git a/src/animation/blend_state_1d.cpp b/src/animation/blend_state_1d.cpp
index 3399c6e..0273fcb 100644
--- a/src/animation/blend_state_1d.cpp
+++ b/src/animation/blend_state_1d.cpp

@@ -6,8 +6,8 @@
 
 using namespace rive;
 
-StateInstance* BlendState1D::makeInstance(ArtboardInstance* instance) const {
-    return new BlendState1DInstance(this, instance);
+std::unique_ptr<StateInstance> BlendState1D::makeInstance(ArtboardInstance* instance) const {
+    return std::make_unique<BlendState1DInstance>(this, instance);
 }
 
 StatusCode BlendState1D::import(ImportStack& importStack) {

diff --git a/src/animation/blend_state_direct.cpp b/src/animation/blend_state_direct.cpp
index cc421ac..b90ff03 100644
--- a/src/animation/blend_state_direct.cpp
+++ b/src/animation/blend_state_direct.cpp

@@ -6,6 +6,6 @@
 
 using namespace rive;
 
-StateInstance* BlendStateDirect::makeInstance(ArtboardInstance* instance) const {
-    return new BlendStateDirectInstance(this, instance);
+std::unique_ptr<StateInstance> BlendStateDirect::makeInstance(ArtboardInstance* instance) const {
+    return std::make_unique<BlendStateDirectInstance>(this, instance);
 }
\ No newline at end of file

diff --git a/src/animation/layer_state.cpp b/src/animation/layer_state.cpp
index 42327ac..45c0e8c 100644
--- a/src/animation/layer_state.cpp
+++ b/src/animation/layer_state.cpp

@@ -46,6 +46,6 @@
 
 void LayerState::addTransition(StateTransition* transition) { m_Transitions.push_back(transition); }
 
-StateInstance* LayerState::makeInstance(ArtboardInstance* instance) const {
-    return new SystemStateInstance(this, instance);
+std::unique_ptr<StateInstance> LayerState::makeInstance(ArtboardInstance* instance) const {
+    return std::make_unique<SystemStateInstance>(this, instance);
 }
\ No newline at end of file

diff --git a/src/animation/state_machine_instance.cpp b/src/animation/state_machine_instance.cpp
index 1176c6c..b5bfa84 100644
--- a/src/animation/state_machine_instance.cpp
+++ b/src/animation/state_machine_instance.cpp

@@ -52,7 +52,7 @@
         void init(const StateMachineLayer* layer, ArtboardInstance* instance) {
             m_ArtboardInstance = instance;
             assert(m_Layer == nullptr);
-            m_AnyStateInstance = layer->anyState()->makeInstance(instance);
+            m_AnyStateInstance = layer->anyState()->makeInstance(instance).release();
             m_Layer = layer;
             changeState(m_Layer->entryState());
         }
@@ -124,7 +124,7 @@
             if ((m_CurrentState == nullptr ? nullptr : m_CurrentState->state()) == stateTo) {
                 return false;
             }
-            m_CurrentState = stateTo == nullptr ? nullptr : stateTo->makeInstance(m_ArtboardInstance);
+            m_CurrentState = stateTo == nullptr ? nullptr : stateTo->makeInstance(m_ArtboardInstance).release();
             return true;
         }