serial: mark port disconnected on close
Otherwise it could still be connected when the port was opened again, and subsequent calls for stuff could fail.
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@@ -812,6 +812,8 @@ mm_serial_port_close (MMSerialPort *self)
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if (priv->fd >= 0) {
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g_message ("(%s) closing serial device...", mm_port_get_device (MM_PORT (self)));
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mm_port_set_connected (MM_PORT (self), FALSE);
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if (priv->channel) {
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g_source_remove (priv->watch_id);
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g_io_channel_shutdown (priv->channel, TRUE, NULL);
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