Avoid UNLOCKing the critical section twice, which might cause a hang.

Avoid UNLOCKing the critical section twice, which might cause a hang.

2003-08-25  Tor Lillqvist  <tml@iki.fi>

	* glib/giowin32.c (read_thread): Avoid UNLOCKing the critical
	section twice, which might cause a hang. (#120653)

	* glib/giowin32.c (g_io_channel_unix_new): Warn if fd is both a
	valid file descriptor and socket.