unicode_loop_reset
cd->lfuncs.loop_reset = unicode_loop_reset;
return unicode_loop_reset(&wcd->parent,NULL,NULL);
res = unicode_loop_reset(&wcd->parent,&outptr,&outleft);
return unicode_loop_reset(&wcd->parent,outbuf,outbytesleft);
size_t res = unicode_loop_reset(&wcd->parent,outbuf,outbytesleft);