Load mUniformLocations using loadVector Bug: b/275102061 Change-Id: I1da5bdd6bf0ec40cd877c2274a8fe1ee0b11267a Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4849551 Reviewed-by: Roman Lavrov <romanl@google.com> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Commit-Queue: Charlie Lao <cclao@google.com>