Add default switch cases.

Bug 15387371

Change-Id: I97644bfd9dbdc1109630199bc897f8b2572d5e83
Reviewed-on: https://swiftshader-review.googlesource.com/4502
Reviewed-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <capn@google.com>
Tested-by: Nicolas Capens <capn@google.com>
3 files changed