Collect closure functions in isolate

runtime/vm/object_store.cc

Index: runtime/vm/object_store.cc
diff --git a/runtime/vm/object_store.cc b/runtime/vm/object_store.cc
index 8ec5df0a0d3723cc0cb89f3a16e2b1e0693d3092..90a346e07e677acf7d722aaf6df59f34091274f9 100644
--- a/runtime/vm/object_store.cc
+++ b/runtime/vm/object_store.cc
@@ -73,6 +73,7 @@ ObjectStore::ObjectStore()
     typed_data_library_(Library::null()),
     vmservice_library_(Library::null()),
     libraries_(GrowableObjectArray::null()),
+    closure_functions_(GrowableObjectArray::null()),
     pending_classes_(GrowableObjectArray::null()),
     pending_deferred_loads_(GrowableObjectArray::null()),
     resume_capabilities_(GrowableObjectArray::null()),
@@ -133,6 +134,7 @@ bool ObjectStore::PreallocateObjects() {
 
   this->pending_deferred_loads_ = GrowableObjectArray::New();
 
+  this->closure_functions_ = GrowableObjectArray::New();
   this->resume_capabilities_ = GrowableObjectArray::New();
   this->exit_listeners_ = GrowableObjectArray::New();
   this->error_listeners_ = GrowableObjectArray::New();