Fix null rect parameter for saveLayer / saveLayerAlpha
Fix null rect parameter for saveLayer / saveLayerAlpha

bug:17476559
Change-Id: I3ba43c9eed8f6fc455eb41e0990e75e0f4c7b648

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