Fix a trivial comment typo.
Fix a trivial comment typo.

Bug: https://code.google.com/p/android/issues/detail?id=170069
Change-Id: Iacd308893561a991971b191d4d10a78ca82753d4

xorware/android_build,xorware/android_build,xorware/android_build,xorware/android_build,xorware/android_build