[PATCH] proto: initialize result expression in ethertype_parse()

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Otherwise, you may crash in:

nft add rule bridge filter input ether type ip

Reported-by: Alvaro Neira Ayuso <alvaroneay@xxxxxxxxx>
Signed-off-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
---
 src/proto.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/src/proto.c b/src/proto.c
index 0a37a65..e5f49cb 100644
--- a/src/proto.c
+++ b/src/proto.c
@@ -754,6 +754,7 @@ static struct error_record *ethertype_parse(const struct expr *sym,
 {
 	struct error_record *erec;
 
+	*res = NULL;
 	erec = sym->dtype->basetype->parse(sym, res);
 	if (erec != NULL)
 		return erec;
-- 
1.7.10.4

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