From 98b7444a7b122498e5b6d693c4503b1702763307 Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Fri, 6 Oct 2017 21:41:41 +0200
Subject: [PATCH] handle hypothetical failure of plugin not found

---
 src/exchange/taler-exchange-aggregator.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/exchange/taler-exchange-aggregator.c b/src/exchange/taler-exchange-aggregator.c
index eb97edbaf..5e0c52c71 100644
--- a/src/exchange/taler-exchange-aggregator.c
+++ b/src/exchange/taler-exchange-aggregator.c
@@ -1620,6 +1620,19 @@ wire_prepare_cb (void *cls,
               "Starting wire transfer %llu\n",
               (unsigned long long) rowid);
   wpd->wp = find_plugin (wire_method);
+  if (NULL == wpd->wp)
+  {
+    /* Should really never happen here, as when we get
+       here the plugin should be in the cache. */
+    GNUNET_break (0);
+    db_plugin->rollback (db_plugin->cls,
+                         wpd->session);
+    global_ret = GNUNET_SYSERR;
+    GNUNET_SCHEDULER_shutdown ();
+    GNUNET_free (wpd);
+    wpd = NULL;
+    return;
+  }
   wpd->eh = wpd->wp->wire_plugin->execute_wire_transfer (wpd->wp->wire_plugin->cls,
                                                          buf,
                                                          buf_size,