rewrite ParseMDNodeVector to follow the normal patter used in the .ll parser.

llvm-svn: 92292
diff --git a/llvm/lib/AsmParser/LLParser.h b/llvm/lib/AsmParser/LLParser.h
index e8eb302..7d5cfcf 100644
--- a/llvm/lib/AsmParser/LLParser.h
+++ b/llvm/lib/AsmParser/LLParser.h
@@ -213,6 +213,8 @@
     // Constants.
     bool ParseValID(ValID &ID);
     bool ConvertGlobalValIDToValue(const Type *Ty, ValID &ID, Constant *&V);
+    bool ConvertGlobalOrMetadataValIDToValue(const Type *Ty, ValID &ID,
+                                             Value *&V);
     bool ParseGlobalValue(const Type *Ty, Constant *&V);
     bool ParseGlobalTypeAndValue(Constant *&V);
     bool ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts);