Fix bug in label_largest_component() with filtered graphs

src/graph_tool/topology/__init__.py

@@ -808,10 +808,7 @@ def label_largest_component(g, directed=None):
     label = g.new_vertex_property("bool")
     c, h = label_components(g, directed=directed)
     vfilt, inv = g.get_vertex_filter()
-    if vfilt is None:
-        label.a = c.a == h.argmax()
-    else:
-        label.a = (c.a == h.argmax()) & (vfilt.a ^ inv)
+    label.fa = c.fa == h.argmax()
     return label