prof_pcs|common.nzcv failing on debug Android

I recently found this failure for android and didn't see an open issue for this test even though it seems to fail every so often.

There's not a lot of evidence: in the [recent failure](http://dynamorio.org/CDash/testDetails.php?test=205916&build=42097) the process exited with a zero exit code and no output.

Start with the linked CDash report for prof_pcs|common.nzcv and inspect the Android debug test run, which exited successfully without output. Reproduce the intermittent failure if possible and identify what causes the test to fail; done means the cause is understood and the test or its handling is corrected.

Written by the indexing model from the issue text.