Fix BlendStateExt::mMaxColorMask initialization This variable should not have its unused bits set. To avoid confusion with other masks of the same class, the variable was renamed to mAllColorMask. Bug: angleproject:7200 Change-Id: I72542d49ff8da3dbb8d61c5034ce37c1e8fcc6e1 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3581990 Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org> Commit-Queue: Alexey Knyazev <lexa.knyazev@gmail.com>