qga: drop unnecessary GA_CHANNEL_UNIX_LISTEN checks
Throughout the code there are c->listen_channel checks which manage the listen socket file descriptor (waiting for accept(2), closing the file descriptor, etc). These checks are currently preceded by explicit c->method == GA_CHANNEL_UNIX_LISTEN checks. Explicit GA_CHANNEL_UNIX_LISTEN checks are not necessary since serial channel types do not create the listen channel (c->listen_channel). As more listen channel types are added, explicitly checking all of them becomes messy. Rely on c->listen_channel to determine whether or not a listen socket file descriptor is used. Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com> Reviewed-by: NMichael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: NMichael Roth <mdroth@linux.vnet.ibm.com>
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