Check for __MINGW64__ and not __MINGW64

Should fix bug #612308.

diff --git a/gtk/gtkprintoperation-win32.c b/gtk/gtkprintoperation-win32.c
index 79f747f5dacdd42fe211f6207b822358d7ff134d..76f8a696ae1dcd1cbb39a82badb4b8ce56190f64 100644 (file)
--- a/gtk/gtkprintoperation-win32.c
+++ b/gtk/gtkprintoperation-win32.c
@@ -72,7 +72,7 @@ static void win32_poll_status (GtkPrintOperation *op);
 
 static const GUID myIID_IPrintDialogCallback  = {0x5852a2c3,0x6530,0x11d1,{0xb6,0xa3,0x0,0x0,0xf8,0x75,0x7b,0xf9}};
 
-#if !defined (_MSC_VER) && !defined (MINGW64) && !defined (__MINGW64)
+#if !defined (_MSC_VER) && !defined (MINGW64) && !defined (__MINGW64__)
 #undef INTERFACE
 #define INTERFACE IPrintDialogCallback
 DECLARE_INTERFACE_ (IPrintDialogCallback, IUnknown)