fix windows assert

Windows asserts trigger out of memory stack traces that
are confusing. This permits windows to break more
directly, stopping the IDE at the assert and providing
a less confusing stacktrace outside of the IDE.

R=reed@google.com,herb@google.com
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2039443002

Review-Url: https://codereview.chromium.org/2039443002
1 file changed