mISDN: Fix DTMF locking bug issue

DTMF digits were sent up to socket in locked state.
Receive audio stream was not enabled in certain condition.

Signed-off-by: Andreas Eversberg <andreas@eversberg.eu>
Signed-off-by: Karsten Keil <keil@b1-systems.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/isdn/mISDN/dsp.h b/drivers/isdn/mISDN/dsp.h
index 4a1c444d..41c6cfd 100644
--- a/drivers/isdn/mISDN/dsp.h
+++ b/drivers/isdn/mISDN/dsp.h
@@ -124,7 +124,7 @@
 		/* buffers one full dtmf frame */
 	u8		lastwhat, lastdigit;
 	int		count;
-	u8		digits[16]; /* just the dtmf result */
+	u8		digits[16]; /* dtmf result */
 };