PR: 2527

Submitted by: Marcus Meissner <meissner@suse.de>
Reviewed by: steve

Set cnf to NULL to avoid possible double free.

apps/asn1pars.c

@@ -408,6 +408,7 @@ static int do_generate(BIO *bio, char *genstr, char *genconf, BUF_MEM *buf)
 
 	atyp = ASN1_generate_nconf(genstr, cnf);
 	NCONF_free(cnf);
+	cnf = NULL;
 
 	if (!atyp)
 		return -1;