Fix line distance issue

Bug: oss-fuzz:9430
Change-Id: If785ed487d007fc01a7625686246fe5a66575371
Reviewed-on: https://skia-review.googlesource.com/156180
Reviewed-by: Kevin Lubick <kjlubick@google.com>
Commit-Queue: Jim Van Verth <jvanverth@google.com>
1 file changed