Mesa: Add a fix for mesa sampler array overflow.

Fixes a crash when we have too many samplers.

BUG=chromium:141901
TEST=by hand

Change-Id: I4bfb9ad5ff8bfe7db0079e95fa04dac336b59bb7
Reviewed-on: https://gerrit.chromium.org/gerrit/30364
Tested-by: Stéphane Marchesin <marcheu@chromium.org>
Reviewed-by: Jorge Lucangeli Obes <jorgelo@chromium.org>
Commit-Ready: Stéphane Marchesin <marcheu@chromium.org>
3 files changed