fix [2225964] Android runtime restarted in surfaceflinger/BlurFilter.cpp
fix [2225964] Android runtime restarted in surfaceflinger/BlurFilter.cpp

crash was due to an unintialized variable, which caused the wrong bluring
format to be used and caused a memory overrrun.

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