feeadjuster: fix testflake in test_feeadjuster_imbalance

feeadjuster/test_feeadjuster.py

@@ -174,6 +174,7 @@ def test_feeadjuster_imbalance(node_factory):
 
     chan_total = int(chan_A["total_msat"])
     assert chan_total == int(chan_B["total_msat"])
+    l2.daemon.logsearch_start = 0
     l2.daemon.wait_for_log('imbalance of 30%/70%')
 
     # we force feeadjust initially to test this method and check if it applies