Workaround MSVC 2019 code-gen bug in lighting image filter

Change-Id: Ia189fa2bec80093ddd6e2db35054db31c56106d8
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/261676
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
1 file changed