From 258263a5100a91bedaca67c45d3e87fa764b5284 Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Wed, 26 Jun 2019 21:13:55 +0200
Subject: [PATCH] fix use after free

---
 src/exchange-tools/taler-exchange-wire.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/exchange-tools/taler-exchange-wire.c b/src/exchange-tools/taler-exchange-wire.c
index 9af4c4910..1ea3c5c06 100644
--- a/src/exchange-tools/taler-exchange-wire.c
+++ b/src/exchange-tools/taler-exchange-wire.c
@@ -189,16 +189,17 @@ run (void *cls,
     global_ret = 1;
     return;
   }
-  GNUNET_free (masters);
   if (0 != GNUNET_memcmp (&mpub,
                           &mpub_cfg))
   {
     fprintf (stderr,
              "Master public key `%s' in configuration does not match our master private key!\n",
              masters);
+    GNUNET_free (masters);
     global_ret = 1;
     return;
   }
+  GNUNET_free (masters);
   TALER_EXCHANGEDB_find_accounts (cfg,
                                   &sign_account_data,
                                   NULL);