punt: free whole buffer chain if such is punted

Change-Id: I1326f21f0a00a201d2bdb55b73af14fca6ba8888
Signed-off-by: Klement Sekera <ksekera@cisco.com>
diff --git a/src/vnet/ip/punt.c b/src/vnet/ip/punt.c
index 0869954..651542f 100644
--- a/src/vnet/ip/punt.c
+++ b/src/vnet/ip/punt.c
@@ -370,7 +370,7 @@
     }
 
 error:
-  vlib_buffer_free_no_next (vm, buffers, n_packets);
+  vlib_buffer_free (vm, buffers, n_packets);
 
   return n_packets;
 }