[graphite] Fix graphite Release builds

Change-Id: I6c5ac0811a4c9bc7592a75e7fc31354467ff704c
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/504476
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
1 file changed