Network: Fix node with no name.

src/View/Network/GraphWidget.py

@@ -521,14 +521,14 @@ class GraphWidget(QGraphicsView):
         for edge in self.graph.edges():
             n1 = next(
                 filter(
-                    lambda n: n.node.name == edge.node1.name,
+                    lambda n: n.node == edge.node1,
                     self.node_items
                 )
             )
 
             n2 = next(
                 filter(
-                    lambda n: n.node.name == edge.node2.name,
+                    lambda n: n.node == edge.node2,
                     self.node_items
                 )
             )