- bug fixes in tecs client routines

- improved instr_host routine
- double control etc. in tecs

tecs/coc_client.c

@@ -206,7 +206,7 @@ int CocPushArg(CocConn *conn, const char *name, void *value, int type, int size)
   assert(NULL==strchr(name, ' '));
   buf=&conn->cmdbuf;
   n=conn->nargs;
-  if (n>=sizeof(conn->args)) ERR_MSG("too many return arguments");
+  if (n>=sizeof(conn->args)/sizeof(conn->args[0])) ERR_MSG("too many return arguments");
   conn->args[n].adr=value;
   conn->args[n].type=type;
   conn->args[n].size=size;