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Better fix than https://android-review.googlesource.com/#/c/38631
on issue http://code.google.com/p/android/issues/detail?id=32300

"make" does set ERRORLEVEL but in cmd.exe it seems that ERRORLEVEL
is evaluated before the whole compound statement instead of just
before it is use.

Change-Id: Ia56d3dc89e4b13caabd29aeaf57c277906202fdd