Merge from master minor bug fix to include default encryption mode

When getting raw digest for replay attack detection specify the default
encryption mode (which doesn't actually get used when passing a NULL key).

server/incoming_spa.c

@@ -122,7 +122,7 @@ get_raw_digest(char **digest, char *pkt_data)
     /* initialize an FKO context with no decryption key just so
      * we can get the outer message digest
     */
-    res = fko_new_with_data(&ctx, (char *)pkt_data, NULL);
+    res = fko_new_with_data(&ctx, (char *)pkt_data, NULL, FKO_DEFAULT_ENC_MODE);
     if(res != FKO_SUCCESS)
     {
         log_msg(LOG_WARNING, "Error initializing FKO context from SPA data: %s",