relayd: uninitialized errstr

[Moritz Buhl]

errstr is never set but fail does:
        RSA_meth_free(rsae_method);
        fatalx("%s: %s", __func__, errstr);
Found by codechecker.

OK?
mbuhl

Index: ca.c
===================================================================
RCS file: /cvs/src/usr.sbin/relayd/ca.c,v
retrieving revision 1.39
diff -u -p -r1.39 ca.c
--- ca.c        20 Jan 2022 17:56:35 -0000      1.39
+++ ca.c        10 Nov 2022 00:06:20 -0000
@@ -514,6 +514,7 @@ ca_engine_init(struct relayd *x_env)
                return;
 
        if ((rsae_method = RSA_meth_new("RSA privsep engine", 0)) == NULL)
+               errstr = "RSA_meth_new";
                goto fail;
 
        RSA_meth_set_pub_enc(rsae_method, rsae_pub_enc);