Stop leaking conn->nickname every time we make a connection to a

Tor relay without knowing its expected identity digest (e.g. when
using bridges). Bugfix on 0.2.0.3-alpha.


svn:r12355

src/or/connection_or.c

@@ -663,6 +663,7 @@ connection_or_check_valid_handshake(or_connection_t *conn, int started_here,
 
   if (started_here && tor_digest_is_zero(conn->identity_digest)) {
     memcpy(conn->identity_digest, digest_rcvd, DIGEST_LEN);
+    tor_free(conn->nickname);
     conn->nickname = tor_malloc(HEX_DIGEST_LEN+2);
     conn->nickname[0] = '$';
     base16_encode(conn->nickname+1, HEX_DIGEST_LEN+1,