Shut up errors on Windows

src/Backends/Audio/SDL2.cpp

@@ -1,5 +1,8 @@
 #include "../Audio.h"
 
+#include <stddef.h>
+#include <stdio.h>
+
 #include "SDL.h"
 
 #include "../../Organya.h"

src/Backends/Audio/miniaudio.cpp

@@ -1,5 +1,7 @@
 #include "../Audio.h"
 
+#include <stddef.h>
+
 #define MINIAUDIO_IMPLEMENTATION
 #define MA_NO_DECODING
 #define MA_API static

src/WindowsWrapper.h

@@ -1,8 +1,9 @@
 #pragma once
 
 #ifdef _WIN32
-#include <windef.h>
-#include <wingdi.h>
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#undef FindResource
 #else
 
 #include <stdio.h>