6lowpan: fix hop limit compression

Add missing pointer shift for the 'default' case.

Signed-off-by: Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
Cc: Tony Cheneau <tony.cheneau+zigbeedev@amnesiak.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ieee802154/6lowpan.c b/net/ieee802154/6lowpan.c
index 5c7bcf9..b45e229 100644
--- a/net/ieee802154/6lowpan.c
+++ b/net/ieee802154/6lowpan.c
@@ -492,6 +492,7 @@
 		break;
 	default:
 		*hc06_ptr = hdr->hop_limit;
+		hc06_ptr += 1;
 		break;
 	}