Game crashes more frequently than expected

[jchv]

Game sometimes crashes when opening popup menu, joining multiplayer, or trying to make a room. It's highly unpredictable and seems to be a result of memory corruption.

There is likely something wrong with the sequence of packets that occurs during login. 0x0044 subtype 0 is especially suspect, as the game is very prone to having subtle bugs when this packet is wrong. We should investigate.