Comment 2 for bug 909470

StacktraceTop:
 std::_Rb_tree_increment (__x=0x726f746361465038) at ../../../../src/libstdc++-v3/src/tree.cc:63
 operator++ (this=<optimized out>) at /usr/include/c++/4.4/bits/stl_tree.h:184
 visit_objects (visitor=<optimized out>, this=<optimized out>) at ../../../../lib/engine/framework/reflister.h:108
 Ekiga::HeapImpl<Ekiga::URIPresentity>::visit_presentities (this=<optimized out>, visitor=<optimized out>) at ../../../../lib/engine/presence/heap-impl.h:126
 Avahi::Heap::BrowserCallback (this=0x7f789800cf20, browser=<optimized out>, interface=<optimized out>, protocol=<optimized out>, event=<optimized out>, name=<optimized out>, type=0x1d94718 "_sip._udp", domain=0x1d94728 "local") at ../../../../lib/engine/components/avahi/avahi-heap.cpp:209