fuzzer fix

Error out when fuzzing
conditions are met.

Also, make degenerate
input line ends consistent.

TBR=reed@google.com
BUG=653452, 626164, skia:5829

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=3048

Change-Id: I23a01adde9dec07b54d66ab2418b3ea0b96e4456
Reviewed-on: https://skia-review.googlesource.com/3048
Commit-Queue: Cary Clark <caryclark@google.com>
Reviewed-by: Cary Clark <caryclark@google.com>
5 files changed