BUG/MINOR: cfgparse: do not mention "addr:port" as supported on proxy lines

The very old error message indicating that a proxy name is mandatory
still had a reference to the optional addr:port argument while this one
is explicitly rejected a few lines later since at least 1.9.

This is harmless but confusing. This can be backported to 2.0.

(cherry picked from commit b2ec994523067bc03c0e631e4f5d4ba8dae02cb9)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
1 file changed