[cogl] cogl-xlib.h: add missing COGL_END_DECLS

[Robert Bragg <rbragg src gnome org>]

commit 7b3c6dd7f6810f3c8dec62904daa887c917ab7e2
Author: Andreas Oberritter <obi saftware de>
Date:   Wed Apr 10 15:37:43 2013 +0200

    cogl-xlib.h: add missing COGL_END_DECLS
    
    Fixes compilation with C++ compiler.
    
    Signed-off-by: Andreas Oberritter <obi saftware de>
    Reviewed-by: Robert Bragg <robert linux intel com>

 cogl/cogl-xlib.h | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/cogl/cogl-xlib.h b/cogl/cogl-xlib.h
index f0de9a3..345b3eb 100644
--- a/cogl/cogl-xlib.h
+++ b/cogl/cogl-xlib.h
@@ -55,6 +55,8 @@ COGL_BEGIN_DECLS
 CoglFilterReturn
 cogl_xlib_handle_event (XEvent *xevent);
 
+COGL_END_DECLS
+
 #undef __COGL_XLIB_H_INSIDE__
 
 #endif /* __COGL_XLIB_H__ */