Server crash if players obtain more than 1 Flag in CTF

[Kyle]

For any Capture the flag map that players could obtain multiple flags only the last flag picked up by this player would be kept in the game. causing several errors and even crashing of the server when the player with the flags died. Attached is a patch to ensure that a player can only collect 1 flag at a time.

This applies to 0.2.8-armagetronad-sty and any other sty related branches. sty+ct has been corrected.

[Manuel Moos (z-man)]

Thanks. I simplified the patch (the team check seems unnecessary) and applied it to the sty branch.