c->decoding = nssDecodedCert_Create(NULL, &c->encoding, c->type);
c->decoding = nssDecodedCert_Create(c->object.arena, &c->encoding, c->type);
nssCertificate_GetDecoding(  NSSCertificate *c){    if (!c->decoding) {	c->decoding = nssDecodedCert_Create(NULL, &c->encoding, c->type);    }    return c->decoding;}