[clutter] Silence another compiler warning

[Emmanuele Bassi <ebassi src gnome org>]

commit a5fd1612f5984b1a2cb3f3fd535b1b8777180397
Author: Emmanuele Bassi <ebassi linux intel com>
Date:   Tue Apr 12 21:02:14 2011 +0100

    Silence another compiler warning

 clutter/cogl/cogl/winsys/cogl-winsys-glx.c |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)
---
diff --git a/clutter/cogl/cogl/winsys/cogl-winsys-glx.c b/clutter/cogl/cogl/winsys/cogl-winsys-glx.c
index b4f494d..0e01968 100644
--- a/clutter/cogl/cogl/winsys/cogl-winsys-glx.c
+++ b/clutter/cogl/cogl/winsys/cogl-winsys-glx.c
@@ -223,7 +223,9 @@ static CoglXlibFilterReturn
 glx_event_filter_cb (XEvent *xevent, void *data)
 {
   CoglContext *context = data;
-  CoglRendererGLX *glx_renderer = context->display->renderer->winsys;
+#ifdef GLX_INTEL_swap_event
+  CoglRendererGLX *glx_renderer;
+#endif
 
   if (xevent->type == ConfigureNotify)
     {
@@ -244,6 +246,8 @@ glx_event_filter_cb (XEvent *xevent, void *data)
     }
 
 #ifdef GLX_INTEL_swap_event
+  glx_renderer = context->display->renderer->winsys;
+
   if (xevent->type == (glx_renderer->glx_event_base + GLX_BufferSwapComplete))
     {
       GLXBufferSwapComplete *swap_event = (GLXBufferSwapComplete *) xevent;