Bug 414003: don't scan past end of certitiface header and trailer strings. r=rrelyea, sr=alexei.volkov
Bug 414003: don't scan past end of certitiface header and trailer strings.
r=rrelyea, sr=alexei.volkov

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