s3/libsmb: clang: Fix 'Value stored to 'status' is never read'

Fixes:

source3/libsmb/cliquota.c:340:11: warning: Value stored to 'status' during its initialization is never read <--[clang]
        NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
                 ^~~~~~   ~~~~~~~~~~~~~~~~~~~~~~
/home/samba/samba/source3/libsmb/cliquota.c:357:4: warning: Value stored to 'status' is never read <--[clang]
                        status = NT_STATUS_OK;
                        ^        ~~~~~~~~~~~~
2 warnings generated.

Signed-off-by: Noel Power <noel.power@suse.com>
Reviewed-by: Gary Lockyer <gary@catalyst.net.nz>
