Parse eagerly inside block scopes.

src/preparser.h

Index: src/preparser.h
diff --git a/src/preparser.h b/src/preparser.h
index 26c3065e7c059daa71fd89b5617024992b31360e..92712ff0d892cb0c035148cb50dd8955a63cf7db 100644
--- a/src/preparser.h
+++ b/src/preparser.h
@@ -152,15 +152,14 @@ class ParserBase : public Traits {
   class BlockState BASE_EMBEDDED {
    public:
     BlockState(Scope** scope_stack, Scope* scope)
-        : scope_stack_(scope_stack), outer_scope_(*scope_stack), scope_(scope) {
-      *scope_stack_ = scope_;
+        : scope_stack_(scope_stack), outer_scope_(*scope_stack) {
+      *scope_stack_ = scope;
     }
     ~BlockState() { *scope_stack_ = outer_scope_; }
 
    private:
     Scope** scope_stack_;
     Scope* outer_scope_;
-    Scope* scope_;
   };
 
   class FunctionState BASE_EMBEDDED {