refactor: logparser v5 funcs

logparser/v5/pipe/logcount.go

@@ -18,16 +18,17 @@ type logCount struct {
 // Each yields to the inner iterator while counting the records.
 // Reports the record number on an error.
 func (lc *logCount) Each(yield func(Record) error) error {
-	err := lc.Iterator.Each(func(r Record) error {
+	count := func(r Record) error {
 		lc.n++
 		return yield(r)
-	})
+	}
+
+	err := lc.Iterator.Each(count)
 
 	if err != nil {
 		// lc.n+1: iterator.each won't call yield on err
 		return fmt.Errorf("record %d: %v", lc.n+1, err)
 	}
-
 	return nil
 }