[file-roller] fixed wrong cast to GtkDialog

[Paolo Bacchilega <paobac src gnome org>]

commit 213d487da1e3fdb9be695c6b507a463c49656b4d
Author: Paolo Bacchilega <paobac src gnome org>
Date:   Thu Jun 10 09:32:56 2010 +0200

    fixed wrong cast to GtkDialog

 src/fr-window.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/fr-window.c b/src/fr-window.c
index ef132f2..bf5f9b0 100644
--- a/src/fr-window.c
+++ b/src/fr-window.c
@@ -7065,7 +7065,7 @@ fr_window_view_last_output (FrWindow   *window,
 	gtk_dialog_set_has_separator (GTK_DIALOG (dialog), FALSE);
 	gtk_container_set_border_width (GTK_CONTAINER (dialog), 6);
 	gtk_container_set_border_width (GTK_CONTAINER (gtk_dialog_get_content_area (GTK_DIALOG (dialog))), 6);
-	gtk_box_set_spacing (GTK_BOX (GTK_DIALOG (gtk_dialog_get_content_area (GTK_DIALOG (dialog)))), 8);
+	gtk_box_set_spacing (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (dialog))), 8);
 
 	gtk_widget_set_size_request (dialog, 500, 300);