[gimp] app: remove check which hides conditions that should not happen

[Nils Philippsen <nphilipp src gnome org>]

commit f6f8079013401eecaa11e5f8bdd2688e51fd6602
Author: Nils Philippsen <nils redhat com>
Date:   Wed Nov 14 16:43:06 2012 +0100

    app: remove check which hides conditions that should not happen
    
    Remove a GTK_IS_WINDOW() check where this would hide parent widgets
    being passed in that don't have a gtk toplevel. This should not happen
    and if it does we want to know about it.

 app/actions/file-commands.c |    7 ++-----
 1 files changed, 2 insertions(+), 5 deletions(-)
---
diff --git a/app/actions/file-commands.c b/app/actions/file-commands.c
index fb7a86e..94a23a0 100644
--- a/app/actions/file-commands.c
+++ b/app/actions/file-commands.c
@@ -522,11 +522,8 @@ file_open_dialog_show (Gimp        *gimp,
       gimp_file_dialog_set_open_image (GIMP_FILE_DIALOG (dialog),
                                        image, open_as_layers);
 
-      parent = gtk_widget_get_toplevel (parent);
-
-      if (GTK_IS_WINDOW (parent))
-        gtk_window_set_transient_for (GTK_WINDOW (dialog),
-                                      GTK_WINDOW (parent));
+      gtk_window_set_transient_for (GTK_WINDOW (dialog),
+                                    GTK_WINDOW (gtk_widget_get_toplevel (parent)));
 
       gtk_window_present (GTK_WINDOW (dialog));
     }