Only store application context in ImageAssetManager

lottie/src/main/java/com/airbnb/lottie/manager/ImageAssetManager.java

diff --git a/lottie/src/main/java/com/airbnb/lottie/manager/ImageAssetManager.java b/lottie/src/main/java/com/airbnb/lottie/manager/ImageAssetManager.java
index afda3b5..f36fc6b 100644
--- a/lottie/src/main/java/com/airbnb/lottie/manager/ImageAssetManager.java
+++ b/lottie/src/main/java/com/airbnb/lottie/manager/ImageAssetManager.java
@@ -38,7 +38,7 @@
       return;
     }
 
-    context = ((View) callback).getContext();
+    context = ((View) callback).getContext().getApplicationContext();
     this.imageAssets = imageAssets;
     setDelegate(delegate);
   }