Fix Bitmap#sameAs NPE
Fix Bitmap#sameAs NPE

Bug: 21281842

Change-Id: I4a1e33d7e642fa50e8789f1441e8587d1c15119c

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base