[patch] fix build when ENABLE_CLI_INTERACT_AUTH is disabled

[Mike Frysinger]

The session.h defines clientsession.cipher_none_after_auth only when
ENABLE_CLI_INTERACT_AUTH is defined, but cli-session.c will always
try to set that member.  export cipher_none_after_auth all the time.
-mike

cli-session.c: In function 'cli_session_init':
cli-session.c:171:9: error: 'struct clientsession' has no member named 'cipher_none_after_auth'
  cli_ses.cipher_none_after_auth = 0;

--- a/session.h	Tue Sep 29 22:19:11 2015 +0800
+++ b/session.h	Fri Oct 09 19:21:35 2015 -0400
@@ -293,10 +293,9 @@ struct clientsession {
 	int interact_request_received; /* flag whether we've received an 
 									  info request from the server for
 									  interactive auth.*/
-
+#endif
 	int cipher_none_after_auth; /* Set to 1 if the user requested "none"
 								   auth */
-#endif
 	sign_key *lastprivkey;
 
 	int retval; /* What the command exit status was - we emulate it */
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