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libsec: zero name buffer in X509toECpub()

--- a/sys/src/libsec/port/x509.c

+++ b/sys/src/libsec/port/x509.c

@@ -2320,6 +2320,9 @@

 	ECpub *pub;

 	Bytes *b;

+	if(name != nil)

+		memset(name, 0, nname);

+

 	b = makebytes(cert, ncert);

 	c = decode_cert(b);

 	freebytes(b);