[gtk+] gdk/gdkoffscreenwindow.c: Include fallback-c89.c

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

commit ce30d16da1882e4241c621021fd769e5644b730c
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Fri Jul 19 18:33:42 2013 +0800

    gdk/gdkoffscreenwindow.c: Include fallback-c89.c
    
    This is necessary as we are using round() here, which is not universally
    available.

 gdk/gdkoffscreenwindow.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/gdk/gdkoffscreenwindow.c b/gdk/gdkoffscreenwindow.c
index fda8907..22d1004 100644
--- a/gdk/gdkoffscreenwindow.c
+++ b/gdk/gdkoffscreenwindow.c
@@ -30,6 +30,8 @@
 
 #include <math.h>
 
+#include "fallback-c89.c"
+
 /* LIMITATIONS:
  *
  * Offscreen windows can't be the child of a foreign window,