src: expr: add and use expr_name helper

Currently callers use expr->ops->name, but follouwp patch will remove the
ops pointer from struct expr.  So add this helper and use it everywhere.

Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 1 insertions, 2 deletions

diff --git a/src/json.c b/src/json.c
index fc92d464..2a70e42f 100644
--- a/src/json.c
+++ b/src/json.c
@@ -39,8 +39,7 @@ static json_t *expr_print_json(const struct expr *expr, struct output_ctx *octx)
 	if (expr->ops->json)
 		return expr->ops->json(expr, octx);
 
-	printf("warning: expr ops %s have no json callback\n",
-	       expr->ops->name);
+	printf("warning: expr ops %s have no json callback\n", expr_name(expr));
 
 	fp = octx->output_fp;
 	octx->output_fp = fmemopen(buf, 1024, "w");