Avoid recursing into expressions in finalizeFunction.

Descending into expressions is costly, and we don't have any need to do
it.

Change-Id: I45bf96b8642dceac95fb0468ae78cc785e400716
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/386842
Auto-Submit: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
1 file changed