From 776b513c444033ed77016fe0e6db332c72ec8079 Mon Sep 17 00:00:00 2001
From: Brandon Dyck <brandon@dyck.us>
Date: Fri, 27 Sep 2024 09:39:20 -0600
Subject: [PATCH] Return correct next state from Read

---
 gigaparsec.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/gigaparsec.go b/gigaparsec.go
index d96fed0..66cafb9 100644
--- a/gigaparsec.go
+++ b/gigaparsec.go
@@ -127,8 +127,8 @@ type State[In any] struct {
 
 func (s State[In]) Read(dst []In) (n uint64, next State[In], err error) {
 	nread, err := s.r.ReadAt(dst, int64(s.pos))
-	if n > 0 {
-		s.pos += uint64(n)
+	if nread > 0 {
+		s.pos += uint64(nread)
 	}
 	return uint64(nread), s, err
 }