another fix of the usync dangling global reference
Merge branch 'master' of git://github.com/springlobby/springlobby
Merge branch 'master' of git://github.com/springlobby/springlobby
Merge branch 'master' of git://github.com/springlobby/springlobby
adds a mutex to MapCtrl since OnGetMapImageAsyncCompleted is called by async callback
Some fields are not protected from parallel writes and in particular it was possible for one thread to set m_mapname to empty string while another thread checks an assertion against this very condition
Merge branch 'master' of git://github.com/springlobby/springlobby
Merge pull request #285 from MajBoredom/master

fix for #276 and a fix for a dangling usync global reference