Fix a bug with uninitialized const variables in the optimizing compiler.

src/hydrogen.h

Index: src/hydrogen.h
===================================================================
--- src/hydrogen.h	(revision 9329)
+++ src/hydrogen.h	(working copy)
@@ -243,12 +243,14 @@
 
   // Returns false if there are phi-uses of the arguments-object
   // which are not supported by the optimizing compiler.
-  bool CheckPhis();
+  bool CheckArgumentsPhiUses();
 
-  // Returns false if there are phi-uses of hole values comming
-  // from uninitialized consts.
-  bool CollectPhis();
+  // Returns false if there are phi-uses of an uninitialized const
+  // which are not supported by the optimizing compiler.
+  bool CheckConstPhiUses();
 
+  void CollectPhis();
+
   Handle<Code> Compile(CompilationInfo* info);
 
   void set_undefined_constant(HConstant* constant) {