Fix warning in Fuchsia build

Change-Id: I3f148af37e29eca3390ca1cff3ec96a913b8fac4
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/257038
Commit-Queue: Jim Van Verth <jvanverth@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Auto-Submit: Jim Van Verth <jvanverth@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
1 file changed