better parse mismatch dumps

Change-Id: I51f29d509853bcdc079647e9984842e5efec080a
Reviewed-on: https://skia-review.googlesource.com/c/skcms/+/259737
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Auto-Submit: Mike Klein <mtklein@google.com>
1 file changed