misc: fix issues reported by clang-15

Type: improvement

Change-Id: I3fbbda0378b72843ecd39a7e8592dedc9757793a
Signed-off-by: Damjan Marion <dmarion@me.com>
diff --git a/src/vlib/cli.c b/src/vlib/cli.c
index c43371e..9c53200 100644
--- a/src/vlib/cli.c
+++ b/src/vlib/cli.c
@@ -872,14 +872,14 @@
     }
   if (stats_segment)
     {
-      void *oldheap = vlib_stats_set_heap (0);
+      void *oldheap = vlib_stats_set_heap ();
       was_enabled = clib_mem_trace_enable_disable (0);
       u8 *s_in_svm = format (0, "%U\n", format_clib_mem_heap, 0, 1);
       if (oldheap)
 	clib_mem_set_heap (oldheap);
       u8 *s = vec_dup (s_in_svm);
 
-      oldheap = vlib_stats_set_heap (0);
+      oldheap = vlib_stats_set_heap ();
       vec_free (s_in_svm);
       if (oldheap)
 	{