fix resource leak for not invoking closedir() after opendir()

Signed-off-by: Yunfeng Ye <yeyunfeng@huawei.com>

classify.c

@@ -583,6 +583,7 @@ static void get_irq_user_policy(char *path, int irq, struct user_irq_policy *pol
 					break;
 				}
 			}
+			closedir(poldir);
 		}
 	}
 }

ui/irqbalance-ui.c

@@ -424,6 +424,7 @@ int main(int argc, char **argv)
 					fclose(f);
 				}
 			} while((entry) && (irqbalance_pid == -1));
+			closedir(dir);
 		}
 		if(irqbalance_pid == -1) {
 			printf("Unable to determine irqbalance PID\n");