XML error results in segfault (local game)

[Kyle]

this happens on the latest trunk reversion 922 and some previous versions

XML parsing will cause a segmentation fault if there are errors in the code on a local game
for this situation a comment tag was closed with ---> it also applies to mismatches tags

game output:
XML validation error in kyle/wildfort/corner-0.0.1.aamap.xml:

:72: parser error : Comment not terminated
<!--<Wall height="50">
                                        <Point x="1472" y="-784"/>
                                </Wall>--->
                                       ^
:79: parser error : Comment not terminated
<!--<Wall height="50">
                                        <Point x="1472" y="-784"/>
                                <!--<Wall height="50">
                                  ^
Failed to parse
Segmentation fault

Traceback:
#0 0x00000000006691ee in tXmlParserNamespace::tXmlParser::ValidateXml (
    this=0x17a0dd0, docfd=0x18a8c00, uri=0x714525 "",
    filepath=0x18b6568 "kyle/wildfort/corner-0.0.1.aamap.xml")
    at tools/tXmlParser.cpp:445
#1 0x000000000067fa07 in tResource::ValidateXml (this=0x17a0dd0,
    docfd=0x18a8c00, uri=0x714525 "",
    filepath=0x18b6568 "kyle/wildfort/corner-0.0.1.aamap.xml")
    at resource/tResource.cpp:37
#2 0x0000000000669704 in tXmlParserNamespace::tXmlParser::LoadWithoutParsing (
    this=0x17a0dd0, filename=0x18b6568 "kyle/wildfort/corner-0.0.1.aamap.xml",
    uri=0x714525 "") at tools/tXmlParser.cpp:268
#3 0x0000000000465b9b in sg_ParseMap (aParser=0x17a0dd0, mapfile=
          {<std::basic_string<char, std::char_traits<char>, std::allocator<char> >> = {static npos = 18446744073709551615, _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, _M_p = 0x7fff0a32d330 "he\213\001"}}, <No data fields>}) at tron/gGame.cpp:2387
#4 0x0000000000465e4d in sg_ParseMap (aParser=0x17a0dd0)
    at tron/gGame.cpp:2412
#5 0x000000000046e6b1 in gGame::Verify (this=0x177ed30) at tron/gGame.cpp:2418
#6 0x000000000046ec33 in gGame::StateUpdate (this=0x177ed30)
    at tron/gGame.cpp:2695
#7 0x0000000000464dc7 in GameLoop (input=true) at tron/gGame.cpp:4150
#8 0x000000000046d4af in sg_EnterGameCore (enter_state=nSTANDALONE)