MT#61856 call_flags: attr manipulations, return if unsupported

If the type is wrong, just return.
This make it consistent with the rest of attr manipulations
helpers around.

Change-Id: I4fa8aba6ef8fa382e36b2042e60b51df7ad10494

daemon/call_flags.c

@@ -224,8 +224,10 @@ static const char *ng_sdp_attr_manipulations_iter(const ng_parser_t *parser, str
 	return parser->dict_iter(parser, command_action, ng_sdp_attr_media_iter, sm);
 }
 INLINE const char *ng_sdp_attr_manipulations(const ng_parser_t *parser, sdp_ng_flags *flags, parser_arg value) {
-	if (!parser->is_dict(value))
+	if (!parser->is_dict(value)) {
 		ilog(LOG_WARN, "SDP manipulations: Wrong type for this type of command.");
+		return NULL;
+	}
 	return parser->dict_iter(parser, value, ng_sdp_attr_manipulations_iter, flags);
 }