if ((bio=BIO_new_file((char *)dhfile,"r")) == NULL)
if ((bio=BIO_new_file(dhfile,"r")) == NULL)
static DH *load_dh_param(const char *dhfile)	{	DH *ret=NULL;	BIO *bio;	if ((bio=BIO_new_file((char *)dhfile,"r")) == NULL)		goto err;	ret=PEM_read_bio_DHparams(bio,NULL,NULL,NULL);err:	if (bio != NULL) BIO_free(bio);	return(ret);	}