Fix TestInternalWeakLists test

test/cctest/test-heap.cc

Index: test/cctest/test-heap.cc
diff --git a/test/cctest/test-heap.cc b/test/cctest/test-heap.cc
index 2b1f61a45d3bcff772d18d8831ee85349df2644d..126ac21adac5acd376825032d9039f9803a1ef2a 100644
--- a/test/cctest/test-heap.cc
+++ b/test/cctest/test-heap.cc
@@ -1029,6 +1029,9 @@ TEST(TestInternalWeakLists) {
     ctx[i]->Exit();
   }
 
+  // Force compilation cache cleanup.
+  Heap::CollectAllGarbage(true);
+
   // Dispose the global contexts one by one.
   for (int i = 0; i < kNumTestContexts; i++) {
     ctx[i].Dispose();