When compiling shaders that produce errors X3531 or X4014 even when macros
is nullptr, we would try the same permutation infinitely.

BUG=524297

Change-Id: Id2a26ce2a5344bff4566440342adad5031368994
Reviewed-on: https://chromium-review.googlesource.com/296441Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Corentin Wallez <cwallez@chromium.org>