Added inline to fix compilation in Clang 21

See https://github.com/GPUOpen-LibrariesAndSDKs/VulkanMemoryAllocator/issues/513, https://github.com/GPUOpen-LibrariesAndSDKs/VulkanMemoryAllocator/pull/514

include/vk_mem_alloc.h

diff --git a/include/vk_mem_alloc.h b/include/vk_mem_alloc.h
index e7ef463..6eba37a 100644
--- a/include/vk_mem_alloc.h
+++ b/include/vk_mem_alloc.h
@@ -4290,7 +4290,7 @@
 ////////////////////////////////////////////////////////////////////////////////
 // Memory allocation
 
-static void* VmaMalloc(const VkAllocationCallbacks* pAllocationCallbacks, size_t size, size_t alignment)
+static inline void* VmaMalloc(const VkAllocationCallbacks* pAllocationCallbacks, size_t size, size_t alignment)
 {
     void* result = VMA_NULL;
     if ((pAllocationCallbacks != VMA_NULL) &&
@@ -4310,7 +4310,7 @@
     return result;
 }
 
-static void VmaFree(const VkAllocationCallbacks* pAllocationCallbacks, void* ptr)
+static inline void VmaFree(const VkAllocationCallbacks* pAllocationCallbacks, void* ptr)
 {
     if ((pAllocationCallbacks != VMA_NULL) &&
         (pAllocationCallbacks->pfnFree != VMA_NULL))
@@ -10779,12 +10779,12 @@
 
 
 #ifndef _VMA_MEMORY_FUNCTIONS
-static void* VmaMalloc(VmaAllocator hAllocator, size_t size, size_t alignment)
+static inline void* VmaMalloc(VmaAllocator hAllocator, size_t size, size_t alignment)
 {
     return VmaMalloc(&hAllocator->m_AllocationCallbacks, size, alignment);
 }
 
-static void VmaFree(VmaAllocator hAllocator, void* ptr)
+static inline void VmaFree(VmaAllocator hAllocator, void* ptr)
 {
     VmaFree(&hAllocator->m_AllocationCallbacks, ptr);
 }