use retry in benchmark

src/benchmark/taler-exchange-benchmark.c

@@ -372,12 +372,14 @@ run (void *cls,
     GNUNET_asprintf (&order_enc,
                      "{\"nonce\": %u}",
                      i);
-    unit[0] = TALER_TESTING_cmd_withdraw_amount
-      (withdraw_label,
-       is->exchange,
-       "create-reserve",
-       AMOUNT_5,
-       MHD_HTTP_OK);
+    unit[0] =
+      TALER_TESTING_cmd_withdraw_with_retry
+      (TALER_TESTING_cmd_withdraw_amount
+       (withdraw_label,
+	is->exchange,
+	"create-reserve",
+	AMOUNT_5,
+	MHD_HTTP_OK));
     unit[1] = TALER_TESTING_cmd_deposit
       ("deposit",
        is->exchange,

src/exchange-lib/testing_api_cmd_withdraw.c

@@ -169,6 +169,10 @@ reserve_withdraw_cb (void *cls,
   {
     if (GNUNET_YES == ws->do_retry)
     {
+      GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+		  "Retrying withdraw failed with %u/%d\n",
+		  http_status,
+		  (int) ec);
       if ( (TALER_EC_DB_COMMIT_FAILED_ON_RETRY == ec) ||
 	   (TALER_EC_WITHDRAW_INSUFFICIENT_FUNDS == ec) ||
 	   (TALER_EC_WITHDRAW_RESERVE_UNKNOWN == ec) ||