Reduce TokenDesc size by 20% on 64b platforms.

src/parsing/scanner.h

Index: src/parsing/scanner.h
diff --git a/src/parsing/scanner.h b/src/parsing/scanner.h
index 115c760ca45f8abb14be68bb374c6a86a53722ae..c2ea4bb2aa80a4659f4b626778b144f4bad5f183 100644
--- a/src/parsing/scanner.h
+++ b/src/parsing/scanner.h
@@ -495,11 +495,11 @@ class Scanner {
 
   // The current and look-ahead token.
   struct TokenDesc {
-    Token::Value token;
     Location location;
     LiteralBuffer* literal_chars;
     LiteralBuffer* raw_literal_chars;
     int smi_value_;
+    Token::Value token;
   };
 
   static const int kCharacterLookaheadBufferSize = 1;