patch from will levine to fix building with mingw gcc 3.3.1 (bug 220433).

browser/app/nsBrowserApp.cpp

@@ -55,7 +55,7 @@ int main(int argc, char* argv[])
 char* splash_xpm[] = {0};
 #endif
 
-#ifdef XP_WIN
+#if defined( XP_WIN ) && defined( WIN32 ) && !defined(__GNUC__)
 // We need WinMain in order to not be a console app.  This function is
 // unused if we are a console application.
 int WINAPI WinMain( HINSTANCE, HINSTANCE, LPSTR args, int )

browser/app/splash.rc

@@ -54,9 +54,7 @@ IDD_SPLASH DIALOGEX
 	FONT 8, "MS Sans Serif"
 	BEGIN
 		CONTROL
-#ifndef __MINGW32__
-            IDB_SPLASH,
-#endif
+            		IDB_SPLASH,
 			IDB_SPLASH,
 			"Static",
 			SS_BITMAP,