Fix crash when scrolling a layer
Fix crash when scrolling a layer

Change-Id: I6e61f3b38c5d1291ceb36c9dfa87fcd78480c2f4

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