From 6b9d61a09814747667e11dde5cfe4193c6aacdfa Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Wed, 22 Nov 2023 22:02:24 +0100
Subject: -fix NPE on certain errors

---
 src/exchange/taler-exchange-httpd_age-withdraw_reveal.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/exchange/taler-exchange-httpd_age-withdraw_reveal.c b/src/exchange/taler-exchange-httpd_age-withdraw_reveal.c
index 9b9f1cb88..632368ded 100644
--- a/src/exchange/taler-exchange-httpd_age-withdraw_reveal.c
+++ b/src/exchange/taler-exchange-httpd_age-withdraw_reveal.c
@@ -597,8 +597,9 @@ TEH_handler_age_withdraw_reveal (
   } while(0);
 
   GNUNET_JSON_parse_free (spec);
-  for (unsigned int i = 0; i<actx.num_coins; i++)
-    TALER_blinded_denom_sig_free (&actx.commitment.denom_sigs[i]);
+  if (NULL != actx.commitment.denom_sigs)
+    for (unsigned int i = 0; i<actx.num_coins; i++)
+      TALER_blinded_denom_sig_free (&actx.commitment.denom_sigs[i]);
   GNUNET_free (actx.commitment.denom_sigs);
   GNUNET_free (actx.commitment.denom_pub_hashes);
   GNUNET_free (actx.commitment.denom_serials);
-- 
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