Crash in TSB

[KroArtem]

When one kart attacks another one, the latter should lose 1 tire. Seems like at this point game crashes.

Program received signal SIGSEGV, Segmentation fault.
0x00000000008bd6e4 in std::_Rb_tree<std::string, std::pair<std::string const, irr::core::string<wchar_t, irr::core::irrAllocator<wchar_t> > >, std::_Select1st<std::pair<std::string const, irr::core::string<wchar_t, irr::core::irrAllocator<wchar_t> > > >, std::less<std::string>, std::allocator<std::pair<std::string const, irr::core::string<wchar_t, irr::core::irrAllocator<wchar_t> > > > >::size (
    this=0x8) at /usr/include/c++/4.8/bits/stl_tree.h:728
728       { return _M_impl._M_node_count; }
(gdb) bt
#0  0x00000000008bd6e4 in std::_Rb_tree<std::string, std::pair<std::string const, irr::core::string<wchar_t, irr::core::irrAllocator<wchar_t> > >, std::_Select1st<std::pair<std::string const, irr::core::string<wchar_t, irr::core::irrAllocator<wchar_t> > > >, std::less<std::string>, std::allocator<std::pair<std::string const, irr::core::string<wchar_t, irr::core::irrAllocator<wchar_t> > > > >::size (this=0x8) at /usr/include/c++/4.8/bits/stl_tree.h:728
#1  0x00000000008bcf54 in std::map<std::string, irr::core::string<wchar_t, irr::core::irrAllocator<wchar_t> >, std::less<std::string>, std::allocator<std::pair<std::string const, irr::core::string<wchar_t, irr::core::irrAllocator<wchar_t> > > > >::size (this=0x8) at /usr/include/c++/4.8/bits/stl_map.h:435
#2  0x00000000008ba3cd in XMLNode::get (this=0x0, attribute=..., 
    value=0x7fffffffd7f0)
    at /home/kroartem/SVN/stk-code/src/io/xml_node.cpp:177
#3  0x00000000008bb41c in XMLNode::get (this=0x0, attribute=..., 
    value=0x7fffffffd85d)
    at /home/kroartem/SVN/stk-code/src/io/xml_node.cpp:387
#4  0x0000000000aaeabe in TrackObjectPresentationMesh::init (this=0xaedb500, 
    xml_node=0x0, parent=0x0, enabled=true)
    at /home/kroartem/SVN/stk-code/src/tracks/track_object_presentation.cpp:253
#5  0x0000000000aae9f1 in TrackObjectPresentationMesh::TrackObjectPresentationMesh (this=0xaedb500, model_file=..., xyz=..., hpr=..., scale=...)
    at /home/kroartem/SVN/stk-code/src/tracks/track_object_presentation.cpp:247
#6  0x0000000000948a0c in ThreeStrikesBattle::update (this=0xa51c2c0, 
---Type <return> to continue, or q <return> to quit---
    dt=0,0130000003)
    at /home/kroartem/SVN/stk-code/src/modes/three_strikes_battle.cpp:343
#7  0x000000000094ea7a in World::updateWorld (this=0xa51c2c0, dt=0,0130000003)
    at /home/kroartem/SVN/stk-code/src/modes/world.cpp:723
#8  0x0000000000932adc in MainLoop::updateRace (this=0x195ee20, 
    dt=0,0130000003) at /home/kroartem/SVN/stk-code/src/main_loop.cpp:108
#9  0x0000000000932be9 in MainLoop::run (this=0x195ee20)
    at /home/kroartem/SVN/stk-code/src/main_loop.cpp:129
#10 0x00000000009307ef in main (argc=1, argv=0x7fffffffde48)
    at /home/kroartem/SVN/stk-code/src/main.cpp:1387