les: fix distReq.sentChn double close bug (ethereum#17639)

gballet · Sep 14, 2018 · d4a28a1 · d4a28a1
1 parent 86a03f9
commit d4a28a1
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/les/distributor.go b/les/distributor.go
@@ -114,7 +114,9 @@ func (d *requestDistributor) loop() {
 			d.lock.Lock()
 			elem := d.reqQueue.Front()
 			for elem != nil {
-				close(elem.Value.(*distReq).sentChn)
+				req := elem.Value.(*distReq)
+				close(req.sentChn)
+				req.sentChn = nil
 				elem = elem.Next()
 			}
 			d.lock.Unlock()