largefiles: fix addremove when no largefiles are specified

hgext/largefiles/overrides.py

@@ -900,6 +900,7 def override_addremove(orig, ui, repo, *
     # to have handled by original addremove.  Monkey patching here makes sure
     # we don't remove the standin in the largefiles code, preventing a very
     # confused state later.
+    if missing:
     repo._isaddremove = True
     remove_largefiles(ui, repo, *missing, **opts)
     repo._isaddremove = False