Comment 2 for bug 1267116

StacktraceTop:
 GtkNode::MatchStringProperty (this=0x988dd10, name=..., value=...) at /build/buildd/autopilot-gtk-1.4+14.04.20140107/lib/GtkNode.cpp:302
 ~basic_string (this=0xbf9b23e8, __in_chrg=<optimized out>) at /usr/include/c++/4.8/bits/basic_string.h:539
 internal_visit<std::basic_string<char> > (this=<optimized out>, operand=...) at /usr/include/boost/variant/variant.hpp:315
 visitation_impl_invoke_impl<boost::detail::variant::destroyer, void*, std::basic_string<char> > (visitor=..., storage=0xbf9b23e8) at /usr/include/boost/variant/detail/visitation_impl.hpp:130
 visitation_impl_invoke<boost::detail::variant::destroyer, void*, std::basic_string<char>, boost::variant<std::basic_string<char>, bool, int>::has_fallback_type_> (internal_which=<optimized out>, visitor=..., t=0x0, storage=0xbf9b23e8) at /usr/include/boost/variant/detail/visitation_impl.hpp:173