Avoid unused 'autoproxy' variable when built without libproxy support.
Avoid unused 'autoproxy' variable when built without libproxy support.

If we change the way we detect and abort, we can *check* that variable
that the compiler is complaining about.

I just noticed that libproxy support isn't working; OPENCONNECT_LIBPROXY
is never being defined. Will fix that shortly...

Signed-off-by: David Woodhouse <b460d66aaf00c296a3db1c1d9eeafc081d5f7d70@intel.com>

sihde/openconnect,chadcatlett/openconnect,mtmiller/openconnect,don-johnny/openconnect,chadcatlett/openconnect,mveplus/openconnect-client,certik/openconnect,cernekee/openconnect,liiir1985/openconnect,mtmiller/openconnect,sihde/openconnect,matlockx/openconnect,lins05/openconnect,matlockx/openconnect,mdutton3/OpenConnect,atyndall/openconnect,matlockx/openconnect,sihde/openconnect,nmav/openconnect-mine,mdutton3/OpenConnect,certik/openconnect,brandt/openconnect,chadcatlett/openconnect,atyndall/openconnect,mveplus/openconnect-client,lins05/openconnect,lins05/openconnect,chadcatlett/openconnect,mdutton3/OpenConnect,cernekee/openconnect,mveplus/openconnect-client,lins05/openconnect,matlockx/openconnect,nmav/openconnect-mine,brandt/openconnect,neshema/openconnect,don-johnny/openconnect,don-johnny/openconnect,nmav/openconnect-mine,cernekee/openconnect,certik/openconnect,brandt/openconnect,liiir1985/openconnect,mveplus/openconnect-client,liiir1985/openconnect,brandt/openconnect,cernekee/openconnect,mtmiller/openconnect,neshema/openconnect,atyndall/openconnect,don-johnny/openconnect,atyndall/openconnect,nmav/openconnect-mine,liiir1985/openconnect,neshema/openconnect,mtmiller/openconnect,neshema/openconnect