Fix NPE when handling certain kinds of ANRs.
Fix NPE when handling certain kinds of ANRs.

Change-Id: Iccef1852e52c84f6f49d30c491431460a10b33d3

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