misc: fix issues reported by clang-15

Type: improvement

Change-Id: I3fbbda0378b72843ecd39a7e8592dedc9757793a
Signed-off-by: Damjan Marion <dmarion@me.com>
diff --git a/src/vnet/devices/pipe/pipe.c b/src/vnet/devices/pipe/pipe.c
index 26b0197..cd22c1a 100644
--- a/src/vnet/devices/pipe/pipe.c
+++ b/src/vnet/devices/pipe/pipe.c
@@ -131,7 +131,7 @@
 {
   u32 n_left_from, n_left_to_next, n_copy, *from, *to_next;
   u32 next_index = VNET_PIPE_TX_NEXT_ETHERNET_INPUT;
-  u32 i, sw_if_index = 0, n_pkts = 0;
+  u32 i, sw_if_index = 0;
   vlib_buffer_t *b;
   pipe_t *pipe;
 
@@ -159,7 +159,6 @@
 	  vnet_buffer (b)->sw_if_index[VLIB_TX] = ~0;
 
 	  i++;
-	  n_pkts++;
 	}
       from += n_copy;