[stream] Fix returned offset
[stream] Fix returned offset

pjm0616/vte,asivokon/vte-fx,rvu95/vte,rvu95/vte,pjm0616/vte,saitoha/vte-sixel,saitoha/vte-sixel,rvu95/vte,gloob/vte-copy,thestinger/vte-ng,aligo/vte,gloob/vte-copy,saitoha/vte-sixel,flaxandteal/gasket-vte,thestinger/vte-ng,jessevdk/vte,rvu95/vte,jessevdk/vte,asivokon/vte-fx,asivokon/vte-fx,thestinger/vte-ng,pjm0616/vte,aligo/vte,jessevdk/vte,flaxandteal/gasket-vte,gloob/vte-copy,jessevdk/vte,flaxandteal/gasket-vte,aligo/vte,flaxandteal/gasket-vte,asivokon/vte-fx