diff -ur v23/ezyaml.c v24/ezyaml.c
--- v23/ezyaml.c	2018-09-14 21:50:19.000000000 +0900
+++ v24/ezyaml.c	2018-09-14 21:57:25.000000000 +0900
@@ -116,11 +116,13 @@
 		if( strstr(s, t) ){
 			idx += ( strstr(s, t) - s );
 			free(s);
+			obj_del(lst);
 			return idx;
 		}
 		idx += strlen(s);
 		free(s);
 	}
+	obj_del(lst);
 	return -1;
 }
 
@@ -477,6 +479,7 @@
 	sum = cp_add(sum, s);
 	str = str_new(sum);
 	free(sum);
+	obj_del(lst);
 	return str;
 }