Comment 2 for bug 741723

StacktraceTop:
 emit (icon_theme=<value optimized out>, data=0x3b78070) at /usr/include/sigc++-2.0/sigc++/signal.h:1002
 emit (icon_theme=<value optimized out>, data=0x3b78070) at /usr/include/sigc++-2.0/sigc++/signal.h:2777
 SimpleLauncherIcon::OnIconThemeChanged (icon_theme=<value optimized out>, data=0x3b78070) at /build/buildd/unity-3.6.8/src/SimpleLauncherIcon.cpp:136
 g_closure_invoke (closure=0x3366d90, return_value=0x0, n_param_values=1, param_values=0x854a20, invocation_hint=0x7fff782a0e10) at /build/buildd/glib2.0-2.28.4/./gobject/gclosure.c:767
 signal_emit_unlocked_R (node=<value optimized out>, detail=0, instance=0xac6110, emission_return=0x0, instance_and_params=0x854a20) at /build/buildd/glib2.0-2.28.4/./gobject/gsignal.c:3252