Small cleanup of ast.h.

Somehow the definition of DECLARE_NODE_TYPE was duplicated and never undef'd.

R=jkummerow@chromium.org
BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/9372056

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10670 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/ast.h

@@ -154,7 +154,7 @@ typedef ZoneList<Handle<Object> > ZoneObjectList;
 
 #define DECLARE_NODE_TYPE(type)                                         \
   virtual void Accept(AstVisitor* v);                                   \
-  virtual AstNode::Type node_type() const { return AstNode::k##type; }  \
+  virtual AstNode::Type node_type() const { return AstNode::k##type; }
 
 
 enum AstPropertiesFlag {
@@ -245,11 +245,6 @@ class AstNode: public ZoneObject {
 };
 
 
-#define DECLARE_NODE_TYPE(type)                                         \
-  virtual void Accept(AstVisitor* v);                                   \
-  virtual AstNode::Type node_type() const { return AstNode::k##type; }  \
-
-
 class Statement: public AstNode {
  public:
   Statement() : statement_pos_(RelocInfo::kNoPosition) {}
@@ -2050,6 +2045,8 @@ class ThisFunction: public Expression {
   explicit ThisFunction(Isolate* isolate): Expression(isolate) {}
 };
 
+#undef DECLARE_NODE_TYPE
+
 
 // ----------------------------------------------------------------------------
 // Regular expressions