Fix ASAN error with test Test was not creating large enough vertex attributes for the DrawQuad call and thus hitting ASAN error when trying to copy the 6 vertices worth of data from an array of 3. Bug: b/166617516 Change-Id: Ia05909ada12cafa48e70c6b4ecdbbf729bbb71be Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2380234 Commit-Queue: Courtney Goeltzenleuchter <courtneygo@google.com> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Tobin Ehlis <tobine@google.com>