fix contour-measure for move-line-move

Use RawIter, so we can dependably peek() (since consumeDegenerates in
Iter() make peeking unreliable), which caused us to think there were two
real contours in the test case.

Bug: oss-fuzz:13013
Change-Id: I0d85f3e6a83cb972c4d801dd9b17f0e388b926d0
Reviewed-on: https://skia-review.googlesource.com/c/192025
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Kevin Lubick <kjlubick@google.com>
5 files changed