Use generic buf_append() in start_cstp_connection()
Use generic buf_append() in start_cstp_connection()

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

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