clear train

cv4/a_train.c

@@ -55,8 +55,11 @@ struct car* clear_train(struct car* first, const char* target) {
 		if(strcmp(this->value, target) == 0){
 			this->next == this->next->next; 
 			free(this);
+			return first;
+		}
+		else {
+			continue;
 		}
-		this = this->next;
 	} 
 	return NULL;
 }