If a conic contains any infinite points, abort chopping to quads.

Otherwise bad things (asserts, bogus data, dogs and cats living
together, mass hysteria).

Bug: 755043
Change-Id: I64cd1dacf553463f18babcb24deb2be08c762c67
Reviewed-on: https://skia-review.googlesource.com/35730
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Stephen White <senorblanco@chromium.org>
1 file changed