res/ari/config.c: Fix conf_alloc() object init.

Need to finish initializing the string fields in the ao2 object before
putting any default strings into them.

ASTERISK-25383 #close
Reported by:  yaron nahum

Change-Id: I9f7f3a03f0c4991a01593abf8697b9a587c0ea84

res/ari/config.c

@@ -182,11 +182,10 @@ static void *conf_alloc(void)
 	if (!cfg->general) {
 		return NULL;
 	}
-	aco_set_defaults(&general_option, "general", cfg->general);
-
 	if (ast_string_field_init(cfg->general, 64)) {
 		return NULL;
 	}
+	aco_set_defaults(&general_option, "general", cfg->general);
 
 	cfg->users = ao2_container_alloc_rbtree(AO2_ALLOC_OPT_LOCK_NOLOCK,
 		AO2_CONTAINER_ALLOC_OPT_DUPS_REPLACE, user_sort_cmp, NULL);