LibJS: Make WeakContainer pruning do less work

Instead of iterating *all* swept cells when pruning weak containers,
only iterate the cells actually *in* the container.

Also, instead of compiling a list of all swept cells, we can simply
check the Cell::state() flag to know if something should be pruned.

1 files changed, 1 insertions, 1 deletions

diff --git a/Userland/Libraries/LibJS/Runtime/FinalizationRegistry.h b/Userland/Libraries/LibJS/Runtime/FinalizationRegistry.h
index 681df05c3b..9fca911f34 100644
--- a/Userland/Libraries/LibJS/Runtime/FinalizationRegistry.h
+++ b/Userland/Libraries/LibJS/Runtime/FinalizationRegistry.h
@@ -30,7 +30,7 @@ public:
     bool remove_by_token(Object& unregister_token);
     void cleanup(FunctionObject* callback = nullptr);
 
-    virtual void remove_swept_cells(Badge<Heap>, Span<Cell*>) override;
+    virtual void remove_dead_cells(Badge<Heap>) override;
 
 private:
     virtual void visit_edges(Visitor& visitor) override;