Fix logic error in GrProcessorSet::dumpProcessors.

I broke this during the refactor, at http://review.skia.org/304857

Change-Id: I9f16acd05fbb3767eed59810a1b1a8a110ce29d4
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/309878
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
1 file changed