From 135172bae4ef2d587efce112fd350b52e5a2d7a4 Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Sun, 19 Mar 2017 11:16:53 +0100
Subject: [PATCH] fix regression causing NPE

---
 src/exchange/taler-exchange-httpd_db.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/exchange/taler-exchange-httpd_db.c b/src/exchange/taler-exchange-httpd_db.c
index 78893d426..c3bc8ae48 100644
--- a/src/exchange/taler-exchange-httpd_db.c
+++ b/src/exchange/taler-exchange-httpd_db.c
@@ -401,7 +401,7 @@ TEH_DB_execute_refund (struct MHD_Connection *connection,
              (0 == memcmp (&tlp->details.refund->h_proposal_data,
                            &refund->h_proposal_data,
                            sizeof (struct GNUNET_HashCode))) &&
-             (ref->rtransaction_id == refund->rtransaction_id) )
+             (tlp->details.refund->rtransaction_id == refund->rtransaction_id) )
         {
           ref = tlp->details.refund;
           refund_found = GNUNET_YES;