return (ptr ? ccinfo : NULL);
NSS_CMSContentInfo_GetChildContentInfo(NSSCMSContentInfo *cinfo){    switch (NSS_CMSContentInfo_GetContentTypeTag(cinfo)) {    case SEC_OID_PKCS7_DATA:	return NULL;    case SEC_OID_PKCS7_SIGNED_DATA:	return &(cinfo->content.signedData->contentInfo);    case SEC_OID_PKCS7_ENVELOPED_DATA:	return &(cinfo->content.envelopedData->contentInfo);    case SEC_OID_PKCS7_DIGESTED_DATA:	return &(cinfo->content.digestedData->contentInfo);    case SEC_OID_PKCS7_ENCRYPTED_DATA:	return &(cinfo->content.encryptedData->contentInfo);    default:	return NULL;    }}