path is rect bug number nine

This variation exploits a sequence which uses a zero
length line to note that lines have been recorded, but
no rectangle edge has been encountered.

R=robertphillips@google.com

Docs-Preview: https://skia.org/?cl=121282
Bug: 824145,skia:7792
Change-Id: I652e9482b2867c3d7da30d5f5df2aecbfd0d716d
Reviewed-on: https://skia-review.googlesource.com/121282
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Cary Clark <caryclark@skia.org>
3 files changed