Really fix SSLv2 session ID handling

PR: 377

CHANGES

@@ -375,6 +375,15 @@ TODO: bug: pad  x  with leading zeros if necessary
  
  Changes between 0.9.7 and 0.9.7a  [XX xxx 2003]
 
+  *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
+     checked on reconnect on the client side, therefore session resumption
+     could still fail with a "ssl session id is different" error. This
+     behaviour is masked when SSL_OP_ALL is used due to
+     SSL_OP_MICROSOFT_SESS_ID_BUG being set.
+     Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
+     followup to PR #377.
+     [Lutz Jaenicke]
+
   *) IA-32 assembler support enhancements: unified ELF targets, support
      for SCO/Caldera platforms, fix for Cygwin shared build.
      [Andy Polyakov]

ssl/s2_clnt.c

@@ -1021,7 +1021,7 @@ static int get_server_finished(SSL *s)
 		if (!(s->options & SSL_OP_MICROSOFT_SESS_ID_BUG))
 			{
 			if ((s->session->session_id_length > sizeof s->session->session_id)
-			    || (0 != memcmp(buf, s->session->session_id,
+			    || (0 != memcmp(buf + 1, s->session->session_id,
 			                    (unsigned int)s->session->session_id_length)))
 				{
 				ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);