Fix PIDDIR assertion (Closes: #648815).

debian/ngircd.init

@@ -42,7 +42,7 @@ DAEMONUSER='irc'	# also group
 . /lib/lsb/init-functions
 
 # Assert PIDDIR
-[ ! -d "$PIDDIR" ] || mkdir -p "$PIDDIR"
+[ -d "$PIDDIR" ] || mkdir -p "$PIDDIR"
 chown "$DAEMONUSER:$DAEMONUSER" "$PIDDIR"
 
 # Assert DAEMONUSER's home