Releasing lock even if exception is thrown.
Releasing lock even if exception is thrown.

However, the whole method needs to be reviewed. It still has several
locking/unlocking places not tied together by try-finally construct,
but they cannot be fixed without deeper understanding.

Change-Id: Iaaf87568d585327654be409377b6d57a1da135eb

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