Fix an empty if statement.

Primarily following the	precedent set by other uses of composite_is_ok(), but
also making sure nothing tries to use c after this point if it is in fact not
ok.

Signed-off-by: Jose A. Rivera <jarrpa@redhat.com>
Reviewed-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Minor typo fix in source3/wscript.

Signed-off-by: Jose A. Rivera <jarrpa@redhat.com>
Reviewed-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>

Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Mon May  5 22:41:19 CEST 2014 on sn-devel-104