Comment 2 for bug 1049939

StacktraceTop:
 GetPointer (this=0x444e450074736575) at /usr/include/Nux-3.0/NuxCore/ObjectPtr.h:203
 unity::launcher::LauncherModel::GetSublist<unity::launcher::BamfLauncherIcon> (this=0x21d73f0) at /build/buildd/unity-6.4.0/launcher/LauncherModel.h:117
 unity::launcher::Controller::Impl::SortAndUpdate (this=<optimized out>) at /build/buildd/unity-6.4.0/launcher/LauncherController.cpp:381
 operator() (_A_a1=..., this=0x2754e68) at /usr/include/sigc++-2.0/sigc++/functors/mem_fun.h:1851
 operator()<const nux::ObjectPtr<unity::launcher::AbstractLauncherIcon>&> (_A_arg1=..., this=0x2754e60) at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:84