A better attempt to add a missing include

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255578 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Transforms/IPO/FunctionImport.h

@@ -11,6 +11,7 @@
 #define LLVM_FUNCTIONIMPORT_H
 
 #include "llvm/ADT/StringMap.h"
+#include <functional>
 
 namespace llvm {
 class LLVMContext;

lib/Transforms/IPO/FunctionImport.cpp

@@ -25,7 +25,6 @@
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/SourceMgr.h"
 
-#include <functional>
 #include <map>
 
 using namespace llvm;