From 0e73c0d4513a360ba3b5bcbe70ef4aeb59f68e3c Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Sun, 7 May 2017 14:07:48 +0200
Subject: check json_pack return value, just to be nice

---
 src/exchange-lib/exchange_api_payback.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

(limited to 'src/exchange-lib/exchange_api_payback.c')

diff --git a/src/exchange-lib/exchange_api_payback.c b/src/exchange-lib/exchange_api_payback.c
index 30cd55cb..8096e55f 100644
--- a/src/exchange-lib/exchange_api_payback.c
+++ b/src/exchange-lib/exchange_api_payback.c
@@ -57,7 +57,7 @@ struct TALER_EXCHANGE_PaybackHandle
    * Denomination key of the coin.
    */
   const struct TALER_EXCHANGE_DenomPublicKey *pk;
-  
+
   /**
    * Handle for the request.
    */
@@ -306,7 +306,11 @@ TALER_EXCHANGE_payback (struct TALER_EXCHANGE_Handle *exchange,
                            "coin_sig", GNUNET_JSON_from_data_auto (&coin_sig),
                            "coin_blind_key_secret", GNUNET_JSON_from_data_auto (blinding_key)
 			  );
-  GNUNET_assert (NULL != payback_obj);
+  if (NULL == payback_obj)
+  {
+    GNUNET_break (0);
+    return NULL;
+  }
 
   ph = GNUNET_new (struct TALER_EXCHANGE_PaybackHandle);
   ph->coin_pub = pr.coin_pub;
-- 
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