Add missing return in GrYUVABackendTextureInfo

Bug: chromium:1374713
Change-Id: Id664ef65d583561060dc2aaeb827289a87d47886
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/593196
Commit-Queue: Brian Salomon <bsalomon@google.com>
Auto-Submit: Greg Daniel <egdaniel@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
1 file changed