tests/feature_check: Check for lack of pass result rather than failure.

Commit cb68a5741aba5d4935428674234a9d643f97405f broke automatic Python
feature detection when running tests, because some detection relied on a
crash of a feature script returning exactly b"CRASH".

This commit fixes this and improves the situation by testing for the lack
of a known pass result, rather than an exact failure result.

Signed-off-by: Damien George <damien@micropython.org>

0 files changed, 0 insertions, 0 deletions