Whether UCHAR_MAX expands to a signed or unsigned number appears to be a matter of some debate. Or the Android headers are wrong. Just add a cast and not think about it too hard. Change-Id: I84e928bdfe459a9129cde276c82b60a318533552 Reviewed-on: https://boringssl-review.googlesource.com/15385 Commit-Queue: David Benjamin <davidben@google.com> Reviewed-by: Adam Langley <agl@google.com>kris/onging/CECPQ3_patch15