-misc fixes

src/exchangedb/exchange_do_reserves_in_insert.sql

@@ -145,14 +145,12 @@ LANGUAGE plpgsql
 AS $$
 DECLARE
   curs_reserve_exist REFCURSOR;
+DECLARE
+  k INT8;
 DECLARE
   curs_transaction_exist REFCURSOR;
 DECLARE
   i RECORD;
-DECLARE
-  r RECORD;
-DECLARE
-  k INT8;
 BEGIN
   transaction_duplicate0 = TRUE;
   transaction_duplicate1 = TRUE;
@@ -255,8 +253,6 @@ BEGIN
     RETURNING reserve_pub)
   SELECT reserve_pub FROM reserve_transaction;
 
-  FETCH FROM curs_transaction_exist INTO r;
-
   k=0;
   <<loop_transaction>> LOOP
     FETCH FROM curs_transaction_exist INTO i;