attempt to fix bug 51882 (sig data w/ no signer infos)
attempt to fix bug 51882 (sig data w/ no signer infos)

ekr/nss-old,nmav/nss,ekr/nss-old,nmav/nss,ekr/nss-old,nmav/nss,nmav/nss,ekr/nss-old,nmav/nss,ekr/nss-old,nmav/nss,nmav/nss,ekr/nss-old,ekr/nss-old