just some refactoring for fm_bot.go

A couple little spots starting to look unwieldy.

Change-Id: If2971b71ae202b152f54ec3df6896d906c34a081
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/208276
Reviewed-by: Brian Osman <brianosman@google.com>
1 file changed