There is no functional changes, but avoids an incorrect static_cast of
pointers when looking to skip the clear in a copyImage of an image onto
itself.
Change-Id: I35949005016dab5df01e58d27de53dccf38d50c7
Bug: chromium:1125354
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2395617
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
