[swell-foop] Preferences dialog should be transient for main window

[Michael Catanzaro <mcatanzaro src gnome org>]

commit f4792a8ccb313a3b09bd640ca012ffba7520e2f8
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Sun Aug 18 11:16:17 2013 -0500

    Preferences dialog should be transient for main window
    
    Less important for swell-foop since there is no fullscreen option;
    (other games had a disappearing main window issue)

 src/swell-foop.vala |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/swell-foop.vala b/src/swell-foop.vala
index e0e0625..8cdf6ab 100644
--- a/src/swell-foop.vala
+++ b/src/swell-foop.vala
@@ -255,6 +255,7 @@ public class SwellFoop : Gtk.Application
         }
 
         preferences_dialog = (Gtk.Dialog) preferences_builder.get_object ("preferences");
+        preferences_dialog.transient_for = window;
 
         /* Theme */
         var theme_combo = preferences_builder.get_object ("theme-selector") as Gtk.ComboBox;