fix: readRemote range request input (#136)

* fix readRemote

* use 0 isntead of -1

* remove bad line

* fix gen

* only set range when needed

---------

Co-authored-by: Łukasz Magiera <magik6k@gmail.com>

lib/paths/remote.go

@@ -487,7 +487,15 @@ func (r *Remote) readRemote(ctx context.Context, url string, offset, size abi.Pa
 	if r.auth != nil {
 		req.Header = r.auth.Clone()
 	}
-	req.Header.Set("Range", fmt.Sprintf("bytes=%d-%d", offset, offset+size-1))
+
+	if offset != 0 || size != 0 {
+		req.Header.Set("Range", fmt.Sprintf("bytes=%d-%d", offset, offset+size-1))
+
+		if size == 0 {
+			req.Header.Set("Range", fmt.Sprintf("bytes=%d-", offset))
+		}
+	}
+
 	req = req.WithContext(ctx)
 
 	resp, err := http.DefaultClient.Do(req)