Fix precision-limit loop check.

This loop was not checking the entire range of gradient intervals.
In practice this is probably not a big deal, since it only affects a
few devices, and only matters for very complex gradients.

Change-Id: I735fcace013633c2bb14da65c4f573a3ef837d06
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/457497
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
Commit-Queue: Michael Ludwig <michaelludwig@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
1 file changed