Don't include net/if_tun.h twice on Solaris
Don't include net/if_tun.h twice on Solaris

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

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