Update tag_duel.cpp

after leavegame all users should be notified of the duel end
fix chat, again
fix
Merge pull request #460 from matteoserva/patch-1

fix error in tagduel.cpp
Merge pull request #461 from matteoserva/master

fix chat
Merge pull request #462 from VanillaSalt/patch60

fix
Merge pull request #463 from luffySAMA/master

fix