Comment 2 for bug 928822

StacktraceTop:
 std::__detail::_List_node_base::_M_hook (this=0x7fa86001f8d0, __position=0x31f2648) at ../../../../src/libstdc++-v3/src/list.cc:129
 _M_insert<unity::debug::Introspectable* const&> (__position=..., this=<optimized out>) at /usr/include/c++/4.6/bits/stl_list.h:1524
 push_back (__x=<synthetic pointer>, this=0x31f2648) at /usr/include/c++/4.6/bits/stl_list.h:988
 unity::debug::Introspectable::AddChild (this=0x31f2640, child=0x3209d90) at /build/buildd/unity-5.2.0/plugins/unityshell/src/Introspectable.cpp:71
 unity::dash::Controller::SetupDashView (this=0x31f2640) at /build/buildd/unity-5.2.0/plugins/unityshell/src/DashController.cpp:90