flow, udp: Fix errno handling in udp_flow_sock()

flowside_connect() behaves much like connect(2) itself, returning -1 on
error with errno set to the error code.  One of the callers, in
udp_flow_sock(), uses the errno code with flow_dbg_perror() *after* it's
called epoll_del() and close() either of which could clobber errno.

Fix that by moving the debug message earlier: there's no reason it has to
wait until the epoll_del() and close().

While we're at it, adjust the comment on flowside_connect() to clarify
that it sets errno (rather than, say, returning an error code).

Suggested-by: Stefano Brivio <sbrivio@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>

0 files changed, 0 insertions, 0 deletions