Fix some unsigned long cipher masks.

107db5804733944a474747007dd1b180405849f9 missed a few.

Change-Id: Ib1c7e85e7de7e26888be17d3b644d856b134f76e
Reviewed-on: https://boringssl-review.googlesource.com/4400
Reviewed-by: Adam Langley <agl@google.com>
2 files changed