bottom out clut recursion at dim=1

This is a modest (~10%) speedup for couple hundred extra bytes.

Change-Id: I80ffb0b13c8c6cfc5b03ff2b58d3a28bc876d769
Reviewed-on: https://skia-review.googlesource.com/c/162104
Auto-Submit: Mike Klein <mtklein@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
1 file changed