util.adminstream: Fix traceback on double-close (fixes #1913)

In some circumstances, particularly with 'opportunistic_writes' and
'fatal_errors' enabled in the epoll backend, the connection may be closed
halfway through the session close process (because it contains debug logging,
which in the case of the watch:log() command, will trigger a write to the
socket).

The chosen fix is to cache session.conn in a local variable (we already did
this later on, but this pulls it up to the top of the function, which is
generally more correct anyway).

0 files changed, 0 insertions, 0 deletions