Handle size_t addition overflow in GrCpuBuffer::Make

Bug: chromium:990570
Change-Id: I444445aafd8b9d495e45b7eb3b0c78d59d78ecc6
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/234576
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
1 file changed