[gimp] plug-ins: screenshot: #include <glib.h> early for G_OS_WIN32

[Michael Natterer <mitch src gnome org>]

commit bbbc103d1893da37dc05a00a13770beb7c4abad3
Author: Michael Natterer <mitch gimp org>
Date:   Sat Apr 2 21:35:13 2016 +0200

    plug-ins: screenshot: #include <glib.h> early for G_OS_WIN32

 plug-ins/screenshot/screenshot-win32.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/plug-ins/screenshot/screenshot-win32.c b/plug-ins/screenshot/screenshot-win32.c
index dcd5802..dd832ed 100644
--- a/plug-ins/screenshot/screenshot-win32.c
+++ b/plug-ins/screenshot/screenshot-win32.c
@@ -22,6 +22,8 @@
 
 #include "config.h"
 
+#include <glib.h>
+
 #ifdef G_OS_WIN32
 
 #include <stdio.h>