Comment 2 for bug 819116

StacktraceTop:
 g_variant_type_info_check (info=0x0, container_class=<value optimized out>) at /build/buildd/glib2.0-2.29.14/./glib/gvarianttypeinfo.c:164
 g_variant_type_info_unref (info=0x0) at /build/buildd/glib2.0-2.29.14/./glib/gvarianttypeinfo.c:831
 g_variant_unref (value=0xb6b05b60) at /build/buildd/glib2.0-2.29.14/./glib/gvariant-core.c:625
 _g_variant_unref (data=0xb6b05b60) at /build/buildd/libdbusmenu-0.4.90/./libdbusmenu-glib/menuitem.c:317
 g_hash_table_insert_node (hash_table=0x9436010, node_index=<value optimized out>, key_hash=265827749, key=0x98145a0, value=0x97897b0, keep_new_key=0) at /build/buildd/glib2.0-2.29.14/./glib/ghash.c:868