stats: strings in string vector are c strings

Type: fix
Change-Id: I9cf9376f2813f7bceecc6a9d714dcb98df77615d
Signed-off-by: Damjan Marion <damarion@cisco.com>

src/vlib/stats/stats.c

@@ -341,6 +341,7 @@ vlib_stats_set_string_vector (vlib_stats_string_vector_t *svp,
   va_start (va, fmt);
   s = va_format (s, fmt, &va);
   va_end (va);
+  vec_add1 (s, 0);
 
   e->string_vector[vector_index] = s;