nicestreamtrans: Fix off-by-one bug
nicestreamtrans: Fix off-by-one bug

https://bugs.freedesktop.org/show_bug.cgi?id=34291

shadeslayer/farstream,kakaroto/farstream,pexip/farstream,kakaroto/farstream,tieto/farstream,tieto/farstream,shadeslayer/farstream,shadeslayer/farstream,kakaroto/farstream,pexip/farstream,tieto/farstream,tieto/farstream,tieto/farstream,pexip/farstream,pexip/farstream,shadeslayer/farstream,kakaroto/farstream