fix bugfix of test_taker

jmclient/test/test_taker.py

@@ -260,7 +260,7 @@ def test_taker_init(setup_taker, schedule, highfee, toomuchcoins, minmakers,
         jm_single().config.set("POLICY", "taker_utxo_retries", oldtakerutxoretries)
         jm_single().config.set("POLICY", "taker_utxo_amtpercent", oldtakerutxoamtpercent)
         jm_single().config.set("POLICY", "tx_fees", oldtxfees)
-        jm_single().config.get("POLICY", "max_sweep_fee_change")
+        jm_single().config.set("POLICY", "max_sweep_fee_change", oldmaxsweepfeechange)
     oldminmakers = jm_single().config.get("POLICY", "minimum_makers")
     jm_single().config.set("POLICY", "minimum_makers", str(minmakers))
     jm_single().config.set("POLICY", "max_sweep_fee_change", "3.0")