acl-plugin: fix coverity issue 166801
A typo resulted in a value being overwritten and flagged as unused, fix the typo.
@@ -257,7 +257,7 @@ vl_api_macip_acl_add_t_print (vl_api_macip_acl_add_t * a, void *handle)
count = a->count;
}
- s = format (0, "SCRIPT: macip_acl_add ");
+ s = format (s, "SCRIPT: macip_acl_add ");
if (a->tag[0])
s = format (s, "tag %s ", a->tag);
