teib: fix segv during failed deletion of entry

Type: fix

If an attempt is made to delete a teib entry and the entry does not
exist, a message is logged. The format string contained an extra "%U",
which results in a segv.

Change-Id: I9b1d6ba63601982ba6ac8607cf710e34c311702a
Signed-off-by: Matthew Smith <mgsmith@netgate.com>

src/vnet/teib/teib.c

@@ -279,8 +279,7 @@ teib_entry_del (u32 sw_if_index, const ip_address_t * peer)
     }
   else
     {
-      TEIB_INFO ("no such entry: %U, %U, %U",
-		 format_vnet_sw_if_index_name,
+      TEIB_INFO ("no such entry: %U, %U", format_vnet_sw_if_index_name,
 		 vnet_get_main (), sw_if_index, format_ip_address, peer);
       return (VNET_API_ERROR_NO_SUCH_ENTRY);
     }