Actually include the ArrayRef header rather than rely on the forward

declaration.

llvm-svn: 203287

llvm/include/llvm/Support/MD5.h

@@ -28,13 +28,12 @@
 #ifndef LLVM_SYSTEM_MD5_H
 #define LLVM_SYSTEM_MD5_H
 
+#include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/SmallString.h"
 #include "llvm/Support/DataTypes.h"
 
 namespace llvm {
 
-template <typename T> class ArrayRef;
-
 class MD5 {
   // Any 32-bit or wider unsigned integer data type will do.
   typedef uint32_t MD5_u32plus;