ignore socket exceptions when closing so we don't fail to terminate t…

[daleevans]

…he threads

if the connection gets killed early by some other process, the act of trying to send the logout command will raise an exception that prevents the rest of the close method from executing, which leaks threads.

[daleevans]

if the connection gets killed early by some other process, the act of trying to send the logout command will raise an exception that prevents the rest of the close method from executing, which leaks threads.