fix fuzz

R=kjlubick@google.com
BUG=skia:6084

Change-Id: I5978805c8d9048e399d83a13173c6a776cabe8ac
Reviewed-on: https://skia-review.googlesource.com/6544
Reviewed-by: Kevin Lubick <kjlubick@google.com>
Commit-Queue: Cary Clark <caryclark@google.com>
1 file changed