common_time: Fix a small build warning.
common_time: Fix a small build warning.

Change-Id: I9a3652c8191ec86089117dbe6c16ff8612a911a3
Signed-off-by: John Grossman <44f967844db7503dcc298cd6e9847cf97867f9b6@google.com>

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