fix typo that corrupts NUM_FAILURES count for failed test cases
fix typo that corrupts NUM_FAILURES count for failed test cases

This did not change the final pass/fail result of the whole suite
but mangled the "FAILED K of N" summary reporting.

informatics-isi-edu/ermrest,ini-bdds/ermrest,ini-bdds/ermrest,informatics-isi-edu/ermrest