Update the header guard I missed when moving the header.

llvm-svn: 160242

llvm/include/llvm/MDBuilder.h

@@ -12,8 +12,8 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef LLVM_SUPPORT_MDBUILDER_H
-#define LLVM_SUPPORT_MDBUILDER_H
+#ifndef LLVM_MDBUILDER_H
+#define LLVM_MDBUILDER_H
 
 #include "llvm/Constants.h"
 #include "llvm/DerivedTypes.h"