Tunesviewer sometimes crashes on exit.

[programmin1]

Sometimes Tunesviewer causes a crash report message. The Python stack trace is:

Traceback (most recent call last):
File "/usr/bin/tunesviewer", line 1685, in
prog.exitclicked(None)
File "/usr/bin/tunesviewer", line 1061, in exitclicked
self.delete_event(None, None, None)
File "/usr/bin/tunesviewer", line 1272, in delete_event
gtk.main_quit()
RuntimeError: called outside of a mainloop