DIEHash: Move header include to be first in the implementation file to flush out header inclusion ordering issues

llvm-svn: 194588
diff --git a/llvm/lib/CodeGen/AsmPrinter/DIEHash.cpp b/llvm/lib/CodeGen/AsmPrinter/DIEHash.cpp
index 85761c6..95eca90 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DIEHash.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DIEHash.cpp
@@ -13,8 +13,9 @@
 
 #define DEBUG_TYPE "dwarfdebug"
 
-#include "DIE.h"
 #include "DIEHash.h"
+
+#include "DIE.h"
 #include "DwarfCompileUnit.h"
 #include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/StringRef.h"