handle paths with degenerate verbs

Bug: skia:7507
Change-Id: I13cedcf8a13f4ce4417ae5c19f7f74d2652724d2
Reviewed-on: https://skia-review.googlesource.com/101760
Reviewed-by: Cary Clark <caryclark@google.com>
Commit-Queue: Mike Reed <reed@google.com>
2 files changed