[ALSA] fix typo in midi code

RME HDSP driver
fix typo in midi code
Signed-off-by: Thomas Charbonnel <thomas@undata.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/rme9652/hdsp.c

@@ -3678,7 +3678,7 @@ static irqreturn_t snd_hdsp_interrupt(int irq, void *dev_id, struct pt_regs *reg
 			hdsp->midi[1].pending = 1;
 			schedule = 1;
 		} else {
-			snd_hdsp_midi_input_read (&hdsp->midi[0]);
+			snd_hdsp_midi_input_read (&hdsp->midi[1]);
 		}
 	}
 	if (hdsp->use_midi_tasklet && schedule)