windows linking fix for DS [fix]

rts/builds/DS/main.cpp

@@ -123,15 +123,17 @@ int main(int argc, char *argv[])
 	return 0;
 }
 
+#if       defined(APPLE)
 /**
- * Required because of some SDL_main.h
+ * Required because of OS X libs, declared in SDL_main.h
  * As we are not linking to SDL (using headless stubs instead),
  * we need to provide this here.
  */
 int SDL_main(int argc, char* argv[])
 {
 	return main(argc, argv);
 }
+#endif // defined(APPLE)
 
 #if defined(WIN32) && !defined(_MSC_VER)
 int WINAPI WinMain(HINSTANCE hInstanceIn, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)