MINOR: cli: make "show fd" also report the xprt and xprt_ctx

These ones are definitely missing from some dumps, let's report them! We
print the xprt's name instead of its useless pointer, as well as its ctx
when xprt is not NULL.

(cherry picked from commit 37be9534245152130fad75c74133c3111a2f382b)
Signed-off-by: Willy Tarreau <w@1wt.eu>
1 file changed