fix computation for localToWorld

Change-Id: I962f47dce685a938f6ec9f7fbbb79c34ea9b3c4b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/282677
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Mike Reed <reed@google.com>
1 file changed