[goffice] GOFontSel: fix base class.

[Morten Welinder <mortenw src gnome org>]

commit 2311954a9f63d5b391b6cc6675fe15d44c00f90a
Author: Morten Welinder <terra gnome org>
Date:   Wed Feb 11 08:33:51 2015 -0500

    GOFontSel: fix base class.
    
    Box, not grid.  Hopefully beneign.

 goffice/gtk/go-font-sel.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/goffice/gtk/go-font-sel.c b/goffice/gtk/go-font-sel.c
index 6aed2e4..1f45634 100644
--- a/goffice/gtk/go-font-sel.c
+++ b/goffice/gtk/go-font-sel.c
@@ -77,7 +77,7 @@ struct _GOFontSel {
 };
 
 typedef struct {
-       GtkGridClass parent_class;
+       GtkBoxClass parent_class;
 
        void (* font_changed) (GOFontSel *gfs, PangoAttrList *modfications);
 } GOFontSelClass;