wafsamba: Add strict option to CHECK_CODE
Some compilers (e.g. xlc) ignores unsupported features, generates a
warning, but does not fail compilation.
This ensures that any compiler warnings are treated as errors and the
feature support is correctly identified. This adds equivalent compiler
option to -Werror for xlc.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13493
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Andreas Schneider <asn@samba.org>
(cherry picked from commit
c08d65c3eea997d52e311f027d84bdc3f9c93059)