[glib] Update gcancellable.c for Win32

[Chun-wei Fan <fanchunwei src gnome org>]

commit 9f90408e976a4e2c1bdc7debfe10601885a78402
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Thu May 5 13:40:38 2011 +0800

    Update gcancellable.c for Win32
    
    errno.h is still required for Windows in this file...

 gio/gcancellable.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/gio/gcancellable.c b/gio/gcancellable.c
index 3573ee8..00a833b 100644
--- a/gio/gcancellable.c
+++ b/gio/gcancellable.c
@@ -27,6 +27,7 @@
 #endif
 #include <gioerror.h>
 #ifdef G_OS_WIN32
+#include <errno.h>
 #include <windows.h>
 #include <io.h>
 #endif