Comment 2 for bug 924198

StacktraceTop:
 g_data_set_internal (dataset=0x0, new_destroy_func=0, new_data=0x0, key_id=53, datalist=0xa91a30) at /build/buildd/glib2.0-2.31.12/./glib/gdataset.c:373
 g_datalist_id_set_data_full (datalist=0xa91a30, key_id=53, data=0x0, destroy_func=0) at /build/buildd/glib2.0-2.31.12/./glib/gdataset.c:680
 g_object_real_dispose (object=0xa91a20) at /build/buildd/glib2.0-2.31.12/./gobject/gobject.c:1001
 g_object_unref (_object=0xa91a20) at /build/buildd/glib2.0-2.31.12/./gobject/gobject.c:2971
 unity::ui::KeyboardUtil::GetAbsoluteKeyBounds (this=<optimized out>, key=0x2, row=0x8, section=0x2, geo=<optimized out>) at /build/buildd/unity-5.0.0/plugins/unityshell/src/KeyboardUtil.cpp:117