res_pjsip_endpoint_identifier_ip: Fix memory leak of hosts when resolving.

This change adds a missing unreference of the hostname when resolving and
also cleans up the iterator.

ASTERISK-26735

Change-Id: Ic012ebaf3d89e714eec340b7b0c5e63c66af857a

res/res_pjsip_endpoint_identifier_ip.c

@@ -323,9 +323,14 @@ static int ip_identify_apply(const struct ast_sorcery *sorcery, void *obj)
 		} else if (results == -1) {
 			ast_log(LOG_ERROR, "An error occurred when adding resolution results of '%s' on '%s'\n",
 				current_string, ast_sorcery_object_get_id(obj));
+			ao2_ref(current_string, -1);
+			ao2_iterator_destroy(&i);
 			return -1;
 		}
+
+		ao2_ref(current_string, -1);
 	}
+	ao2_iterator_destroy(&i);
 
 	ao2_ref(identify->hosts, -1);
 	identify->hosts = NULL;