Add missing header

Natives/AppDelegate.m

@@ -8,9 +8,6 @@
 #import <Foundation/Foundation.h>
 #import <math.h>
 
-#include <dirent.h>
-#include <stdio.h>
-
 #include "utils.h"
 
 GLKView* mGLKView;

Natives/JavaLauncher.c

@@ -4,6 +4,7 @@
 #include <pthread.h>
 #include <unistd.h>
 #include <string.h>
+#include <dirent.h>
 
 #include <sys/stat.h>
 #include <sys/types.h>