mac80211: Don't drop frames received with mesh ttl == 1

Prior this fix, those frames were not received, nor forwarded.  Fix
this to receive and not forward.
Signed-off-by: Javier Cardona <javier@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

net/mac80211/rx.c

@@ -1944,7 +1944,7 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx)
 
 	if (!--mesh_hdr->ttl) {
 		IEEE80211_IFSTA_MESH_CTR_INC(ifmsh, dropped_frames_ttl);
-		return RX_DROP_MONITOR;
+		goto out;
 	}
 
 	if (!ifmsh->mshcfg.dot11MeshForwarding)