Rewind buffer before copying into it.

b/7334897

Change-Id: I83f795cb662d0845314bfb80b9a27ae45b2a0517

Author: marcone

media/java/android/media/videoeditor/MediaArtistNativeHelper.java

@@ -3831,6 +3831,7 @@ public void onThumbnail(int index) {
                         outWidth, outHeight, Bitmap.Config.ARGB_8888);
 
                 // Copy int[] to IntBuffer
+                decBuffer.rewind();
                 decBuffer.put(decArray, 0, thumbnailSize);
                 decBuffer.rewind();