Don't modify the pts array in SkOpEdgeBuilder::preFetch

Change-Id: I2596986cb203e00b1d6d24c0086e98eb6373142b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/288178
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
1 file changed