netfilter: xt_string: Remove unnecessary initialization of struct ts_state

The skb_find_text() accepts uninitialized textsearch state variable.

Signed-off-by: Bojan Prtvar <prtvar.b@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

net/netfilter/xt_string.c

@@ -29,7 +29,6 @@ string_mt(const struct sk_buff *skb, struct xt_action_param *par)
 	struct ts_state state;
 	bool invert;
 
-	memset(&state, 0, sizeof(struct ts_state));
 	invert = conf->u.v1.flags & XT_STRING_FLAG_INVERT;
 
 	return (skb_find_text((struct sk_buff *)skb, conf->from_offset,