Comment 2 for bug 1229337

StacktraceTop:
 g_object_freeze_notify (object=0x346df80) at /build/buildd/glib2.0-2.37.93/./gobject/gobject.c:1089
 apply_cell_attributes (renderer=0x346df80, info=0x7fe2c4315560, data=0x7fffae826480) at /build/buildd/gtk+3.0-3.8.4/./gtk/gtkcellarea.c:1257
 g_hash_table_foreach (hash_table=0x33a9aa0, func=func@entry=0x7fe2d62e23d0 <apply_cell_attributes>, user_data=user_data@entry=0x7fffae826480) at /build/buildd/glib2.0-2.37.93/./glib/ghash.c:1526
 gtk_cell_area_real_apply_attributes (area=<optimized out>, tree_model=0x2f69d60, iter=0x38a8780, is_expander=<optimized out>, is_expanded=<optimized out>) at /build/buildd/gtk+3.0-3.8.4/./gtk/gtkcellarea.c:1313
 gtk_cell_area_box_apply_attributes (area=<optimized out>, tree_model=<optimized out>, iter=<optimized out>, is_expander=<optimized out>, is_expanded=<optimized out>) at /build/buildd/gtk+3.0-3.8.4/./gtk/gtkcellareabox.c:1317