serial-port: stop reading data if the serial port was closed

If a response processor closed the port, don't try to read any
more data from it.  Move the priv->watch_id check to the
while condition so the loop terminates before calling
g_io_channel_read_chars() again, which caused a warning since
the underlying file descriptor was already closed.

Also, bytes_read will never be less than zero (it's unsigned),
so skip the bytes_read > 0 check and just assert that this
condition is true.

0 files changed, 0 insertions, 0 deletions