Additional resource cleanup in RSBlur

When the blur is finished, the input, output, and blur are all destroyed, along with the renderscript instance.

This resolves a strictmode 'resource acquired but never released' violation.

Author: timusus

transformations/src/main/java/jp/wasabeef/glide/transformations/internal/RSBlur.java

@@ -31,14 +31,16 @@ public class RSBlur {
   @TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR2)
   public static Bitmap blur(Context context, Bitmap bitmap, int radius) throws RSRuntimeException {
     RenderScript rs = null;
+    Allocation input = null;
+    Allocation output = null;
+    ScriptIntrinsicBlur blur = null;
     try {
       rs = RenderScript.create(context);
       rs.setMessageHandler(new RenderScript.RSMessageHandler());
-      Allocation input =
-          Allocation.createFromBitmap(rs, bitmap, Allocation.MipmapControl.MIPMAP_NONE,
+      input = Allocation.createFromBitmap(rs, bitmap, Allocation.MipmapControl.MIPMAP_NONE,
               Allocation.USAGE_SCRIPT);
-      Allocation output = Allocation.createTyped(rs, input.getType());
-      ScriptIntrinsicBlur blur = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
+      output = Allocation.createTyped(rs, input.getType());
+      blur = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
 
       blur.setInput(input);
       blur.setRadius(radius);
@@ -48,6 +50,15 @@ public static Bitmap blur(Context context, Bitmap bitmap, int radius) throws RSR
       if (rs != null) {
         rs.destroy();
       }
+      if (input != null) {
+          input.destroy();
+      }
+      if (output != null) {
+          output.destroy();
+      }
+      if (blur != null) {
+          blur.destroy();
+      }
     }
 
     return bitmap;