The server currently crashes if we hit an EOFError due to controllersock
still being in ready and the continue meaning ready isn't re-evaluated.
Setting the value to False can mean the shutdown code doesn't handle the
situation cleanly.
Clear ready to avoid the crash/loop instead and handle any OSError whilst
we're in here.
(Bitbake rev: 2bc47e887c3b41417edaa89a8708c223fd2085de)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>