underflow makes it hard to compute proper radii

Bug: skia:6209
Change-Id: I7c13d58db36c959f6add0638b72fa068ce0c2266
Reviewed-on: https://skia-review.googlesource.com/106740
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
1 file changed