Fix MSAN compile error

Change-Id: I2ac07f2da5e08a3dbefc59fb860d69817906df41
Reviewed-on: https://skia-review.googlesource.com/49441
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Commit-Queue: Jim Van Verth <jvanverth@google.com>
1 file changed