Find right scope associated with prologue

src/compiler/ast-graph-builder.cc

Index: src/compiler/ast-graph-builder.cc
diff --git a/src/compiler/ast-graph-builder.cc b/src/compiler/ast-graph-builder.cc
index 0476aed3144084a7d309289bc55fbe261fca618d..706d2efc13d07ee65cb850842829313a39594ae5 100644
--- a/src/compiler/ast-graph-builder.cc
+++ b/src/compiler/ast-graph-builder.cc
@@ -458,15 +458,15 @@ AstGraphBuilder::AstGraphBuilder(Zone* local_zone, CompilationInfo* info,
 
 
 Node* AstGraphBuilder::GetFunctionClosureForContext() {
-  Scope* declaration_scope = current_scope()->DeclarationScope();
-  if (declaration_scope->is_script_scope() ||
-      declaration_scope->is_module_scope()) {
+  Scope* closure_scope = current_scope()->ClosureScope();
+  if (closure_scope->is_script_scope() ||
+      closure_scope->is_module_scope()) {
     // Contexts nested in the native context have a canonical empty function as
     // their closure, not the anonymous closure containing the global code.
     // Pass a SMI sentinel and let the runtime look up the empty function.
     return jsgraph()->SmiConstant(0);
   } else {
-    DCHECK(declaration_scope->is_function_scope());
+    DCHECK(closure_scope->is_function_scope());
     return GetFunctionClosure();
   }
 }