[gtk/master.msvc: 18/19] demos/widget-factory/widget-factory.c: Include stdlib.h

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

commit 69ed4c90e5ef9302304dbdce796f899b8b43c703
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Thu Jan 30 22:35:54 2020 +0800

    demos/widget-factory/widget-factory.c: Include stdlib.h
    
    Include it for exit().

 demos/widget-factory/widget-factory.c | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/demos/widget-factory/widget-factory.c b/demos/widget-factory/widget-factory.c
index d50143deda..bbf10e8a5d 100644
--- a/demos/widget-factory/widget-factory.c
+++ b/demos/widget-factory/widget-factory.c
@@ -20,6 +20,8 @@
 
 #include "config.h"
 
+#include <stdlib.h>
+
 #include <glib/gi18n.h>
 #include <gtk/gtk.h>