Comment 2 for bug 1037275

StacktraceTop:
 gtk_icon_info_load_symbolic_for_context (icon_info=0x0, context=context@entry=0x925300, was_symbolic=was_symbolic@entry=0x0, error=error@entry=0x0) at /build/buildd/gtk+3.0-3.5.10/./gtk/gtkicontheme.c:3369
 ensure_sidebar_pixbufs (self=0x823000) at seahorse-sidebar.c:208
 on_cell_renderer_action_icon (column=<optimized out>, cell=0x8b2ab0, model=0x909b10, iter=0x7fe5bc001700, user_data=<optimized out>) at seahorse-sidebar.c:579
 apply_cell_attributes (renderer=0x8b2ab0, info=0x92b900, data=0x7fffe2e5f8f0) at /build/buildd/gtk+3.0-3.5.10/./gtk/gtkcellarea.c:1284
 g_hash_table_foreach (hash_table=0x8c0240, func=func@entry=0x7fe5d431bf50 <apply_cell_attributes>, user_data=user_data@entry=0x7fffe2e5f8f0) at /build/buildd/glib2.0-2.33.8/./glib/ghash.c:1524