Fix warning

src/server.c

@@ -164,6 +164,7 @@ SSH_PACKET_CALLBACK(ssh_packet_kexdh_init){
   #endif
       default:
         ssh_set_error(session,SSH_FATAL,"Wrong kex type in ssh_packet_kexdh_init");
+        rc = SSH_ERROR;
   }
   if (rc == SSH_ERROR)
       session->session_state = SSH_SESSION_STATE_ERROR;