Fix HSourcePosition when --hydrogen-track-positions is used.

src/hydrogen-instructions.h

Index: src/hydrogen-instructions.h
diff --git a/src/hydrogen-instructions.h b/src/hydrogen-instructions.h
index 8f9a44b50bcdf9dacf97f45ef3b7cc15268028cc..a596873d09e040c33ceea997bf430d6852b4e0de 100644
--- a/src/hydrogen-instructions.h
+++ b/src/hydrogen-instructions.h
@@ -451,7 +451,7 @@ class HSourcePosition {
   typedef BitField<int, 0, 9> InliningIdField;
 
   // Offset from the start of the inlined function.
-  typedef BitField<int, 9, 22> PositionField;
+  typedef BitField<int, 9, 23> PositionField;
 
   // On HPositionInfo can use this constructor.
   explicit HSourcePosition(int value) : value_(value) { }