json: Drop pointless assignment in exthdr_expr_json()

The updated value of 'is_exists' is no longer read at this point.

Fixes: cb21869649208 ("json: tcp: add raw tcp option match support")
Signed-off-by: Phil Sutter <phil@nwl.cc>

1 files changed, 0 insertions, 1 deletions

diff --git a/src/json.c b/src/json.c
index f648ea1b..f111ad67 100644
--- a/src/json.c
+++ b/src/json.c
@@ -708,7 +708,6 @@ json_t *exthdr_expr_json(const struct expr *expr, struct output_ctx *octx)
 					 "base", expr->exthdr.raw_type,
 					 "offset", expr->exthdr.offset,
 					 "len", expr->len);
-			is_exists = false;
 		}
 
 		return json_pack("{s:o}", "tcp option", root);