22abbb4 certmap: Suppress warning Wmissing-braces

Authored and Committed by lslebodn 6 years ago
    certmap: Suppress warning Wmissing-braces
    
    Older version of gcc(e.g. gcc-4.8.5-11.el7) had a false positive warning
    with c99 struct initialisation "{ 0 }".
    https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53119
    https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64709
    
      CC       src/lib/certmap/libsss_certmap_la-sss_cert_content_nss.lo
    
    src/lib/certmap/sss_cert_content_nss.c:
        In function 'add_pkinit_princ_to_san_list':
    src/lib/certmap/sss_cert_content_nss.c:475:12:
        error: missing braces around initializer [-Werror=missing-braces]
         struct kerberos_principal_name kname = { 0 };
                ^
    src/lib/certmap/sss_cert_content_nss.c:475:12:
        error: (near initialization for 'kname.realm') [-Werror=missing-braces]
    
    Reviewed-by: Sumit Bose <sbose@redhat.com>