fixed memory allocation problem in openac

src/openac/openac.c

@@ -596,10 +596,10 @@ int main(int argc, char **argv)
 
 end:
 	/* delete all dynamically allocated objects */
-	DESTROY_IF(attr_cert);
 	DESTROY_IF(signer_key);
 	DESTROY_IF(signer_cert);
 	DESTROY_IF(user_cert);
+	DESTROY_IF(attr_cert);
 	free(attr_chunk.ptr);
 	free(serial.ptr);
 	closelog();