init out-param on buffer failure

Bug:804651
Change-Id: Ia3c71e2fbe35b55bf27075e6a11ec8c5bd3fb40f
Reviewed-on: https://skia-review.googlesource.com/98663
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Mike Reed <reed@google.com>
1 file changed