Flush input buffers on printer initialization

Seems to be necessary, not sure why.

ql/ql_linux.go

@@ -108,16 +108,14 @@ func (p *Printer) Initialize() error {
 
 	// Flush any former responses in the printer's queue.
 	//
-	// I'm not sure if this is necessary, or rather whether the kernel driver
+	// I haven't checked if this is the kernel driver or the printer doing
-	// does any buffering that could cause data to be returned at this point.
+	// the buffering that causes data to be returned at this point.
-	/*
 	var dummy [32]byte
 	for {
-			if _, err := f.Read(dummy[:]); err == io.EOF {
+		if _, err := p.File.Read(dummy[:]); err == io.EOF {
 			break
 		}
 	}
-	*/
 
 	return nil
 }

sklad/main.go

@@ -185,10 +185,12 @@ func printLabel(id string) error {
 	}
 	defer printer.Close()
 
+	/*
 		printer.StatusNotify = func(status *ql.Status) {
 			log.Printf("\x1b[1mreceived status\x1b[m\n%+v\n%s",
 				status[:], status)
 		}
+	*/
 
 	if err := printer.Initialize(); err != nil {
 		return err