#547 closing program

[canfa]

when closing program (either by X or ctrl+q) the program ends, but the task remains visible in taskmgr and only way to exit is to kill it.

log shows:

Exception in thread Thread-14:Traceback (most recent call last):
File "threading.pyc", line 442, in __bootstrap
File "ipodder\threads.pyc", line 94, in run
File "gui\tree.pyc", line 212, in _scan
TypeError: iteration over non-sequence