do_accept() may strdup() the host name and store it in `name', so we
need to free it before exiting. Perhaps a refactor might be more
appropriate, but I'm not sure I want to touch this mess.

Index: s_socket.c
===================================================================
RCS file: /var/cvs/src/usr.bin/openssl/s_socket.c,v
retrieving revision 1.9
diff -u -p -r1.9 s_socket.c
--- s_socket.c  7 Feb 2018 05:47:55 -0000       1.9
+++ s_socket.c  19 Aug 2018 07:13:49 -0000
@@ -151,6 +151,7 @@ do_server(int port, int type, int *ret,
                        if (do_accept(accept_socket, &sock, &name) == 0) {
                                shutdown(accept_socket, SHUT_RD);
                                close(accept_socket);
+                               free(name);
                                return (0);
                        }
                } else

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