There is no need to keep name ref in NamedMDNode.

llvm-svn: 77511
diff --git a/llvm/lib/AsmParser/LLParser.cpp b/llvm/lib/AsmParser/LLParser.cpp
index 2a2192c..8b3b832 100644
--- a/llvm/lib/AsmParser/LLParser.cpp
+++ b/llvm/lib/AsmParser/LLParser.cpp
@@ -440,8 +440,7 @@
   if (ParseToken(lltok::rbrace, "expected end of metadata node"))
     return true;
 
-  NamedMDNode::Create(Name.c_str(), Name.length(),
-                      Elts.data(), Elts.size(), M);
+  NamedMDNode::Create(Name, Elts.data(), Elts.size(), M);
   return false;
 }