Use same SDL includes on Windows as on Linux, to fix cross compiler issues. This currently breaks native Windows compile, will be fixed later.

src/gui/qt/sound/sdlplayer.cpp

@@ -11,7 +11,7 @@
 //
 #include "sdlplayer.h"
 
-#if (defined _WIN32) || (defined __APPLE__)
+#if (defined __APPLE__)
 	#include <SDL.h>
 #else
 	#include <SDL/SDL.h>

src/gui/qt/sound/sdlplayer.h

@@ -16,7 +16,7 @@
 
 #include "configfile.h"
 
-#if (defined _WIN32) || (defined __APPLE__)
+#if (defined __APPLE__)
 	#include <SDL_mixer.h>
 #else
 	#include <SDL/SDL_mixer.h>