Handle cancelled webseed peer requests if they're not active

webseed-peer.go

@@ -50,13 +50,13 @@ func (ws *webseedPeer) _cancel(r RequestIndex) bool {
 	active, ok := ws.activeRequests[ws.peer.t.requestIndexToRequest(r)]
 	if ok {
 		active.Cancel()
+	}
 	if !ws.peer.deleteRequest(r) {
 		panic("cancelled webseed request should exist")
 	}
 	if ws.peer.isLowOnRequests() {
 		ws.peer.updateRequests("webseedPeer._cancel")
 	}
-	}
 	return true
 }