Keep newer versions of gofumpt happy

Author: EdSchouten

pkg/filesystem/virtual/instance_name_parsing_directory.go

@@ -28,7 +28,7 @@ func (p instanceNameParsingPath) WriteTo(w io.Writer) (nTotal int64, err error)
 
 	n, _ := w.Write([]byte("/"))
 	nTotal += int64(n)
-	return
+	return nTotal, err
 }
 
 // InstanceNameLookupFunc is called by directories created using

pkg/outputpathpersistency/file_reader.go

@@ -23,7 +23,7 @@ type offsetReader struct {
 func (r *offsetReader) Read(p []byte) (n int, err error) {
 	n, err = r.r.ReadAt(p, r.offset)
 	r.offset += int64(n)
-	return
+	return n, err
 }
 
 type fileReader struct {

pkg/outputpathpersistency/file_writer.go

@@ -22,7 +22,7 @@ type offsetWriter struct {
 func (w *offsetWriter) Write(p []byte) (n int, err error) {
 	n, err = w.w.WriteAt(p, w.offsetBytes)
 	w.offsetBytes += int64(n)
-	return
+	return n, err
 }
 
 type fileWriter struct {