[gtk+] mountoperation: fix the build

[Cosimo Cecchi <cosimoc src gnome org>]

commit 82710adc24359d11c01a80e2bb36a6cb98f2b85f
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Tue Sep 27 12:51:54 2011 -0400

    mountoperation: fix the build
    
    2d3db3421fd8067dd9c59a0727da239936187cc5 has a typo which broke the
    build on master.

 gtk/gtkmountoperation.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkmountoperation.c b/gtk/gtkmountoperation.c
index c1ad3da..05e097a 100644
--- a/gtk/gtkmountoperation.c
+++ b/gtk/gtkmountoperation.c
@@ -1167,7 +1167,7 @@ on_button_press_event_for_process_tree_view (GtkWidget      *widget,
 
   ret = FALSE;
 
-  if (gtk_button_event_triggers_context_menu (event))
+  if (gdk_event_triggers_context_menu ((GdkEvent *) event))
     {
       ret = do_popup_menu_for_process_tree_view (widget, event, op);
     }