[taler-exchange] branch master updated: fix bug: case where this is the first refund

[gnunet]

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grothoff pushed a commit to branch master
in repository exchange.

The following commit(s) were added to refs/heads/master by this push:
     new e8ea6bf1 fix bug: case where this is the first refund
e8ea6bf1 is described below

commit e8ea6bf1e7d9f22a964a9e7e13bc68debb0a7954
Author: Christian Grothoff <christian@grothoff.org>
AuthorDate: Fri Aug 14 13:07:53 2020 +0200

    fix bug: case where this is the first refund
---
 src/lib/exchange_api_refund.c | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

diff --git a/src/lib/exchange_api_refund.c b/src/lib/exchange_api_refund.c
index ee634e7f..55f71757 100644
--- a/src/lib/exchange_api_refund.c
+++ b/src/lib/exchange_api_refund.c
@@ -377,13 +377,20 @@ verify_conflict_history_ok (struct 
TALER_EXCHANGE_RefundHandle *rh,
 
     TALER_amount_ntoh (&amount,
                        &rh->depconf.refund_amount);
-    if (0 >
-        TALER_amount_add (&rtotal,
-                          &rtotal,
-                          &amount))
+    if (have_refund)
     {
-      GNUNET_break (0);
-      return GNUNET_SYSERR;
+      if (0 >
+          TALER_amount_add (&rtotal,
+                            &rtotal,
+                            &amount))
+      {
+        GNUNET_break (0);
+        return GNUNET_SYSERR;
+      }
+    }
+    else
+    {
+      rtotal = amount;
     }
   }
   if (-1 == TALER_amount_cmp (&dtotal,

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