Core/Loot: Minor change to previous commit, thanks Vincent_Michael for reminding me about this method in Map class
Core/RA: Fix a possible crash

Caused when RASocket::handle_close (event-driven) would delete the underlying object before RASocket::commandFinished callback was executed for that object. Dereferencing freed pointers is bad.
Core/RA: Addition to previous crashfix

To make sure it also works for sessions that use more than 1 command
before closing.
Core/LFG: Fix a crash

Fix a crash in case a player is recognized as in a LFG dungeon, but without a valid group
Merge remote-tracking branch 'tc/master' into mmaps