clear train

cv4/a_train.c

@@ -54,12 +54,12 @@ struct car* clear_train(struct car* first, const char* target) {
 	while( this->next->next != NULL){
 		if(strcmp(this->next->value, target) == 0){
 			free(this->next);
-			this == this->next->next; 
+			this->next = this->next->next; 
 			return first;
 		}
 		else {
-			continue;
+			this = this->next;
 		}
 	} 
-	return NULL;
+	return first;
 }