Attempt to fix build error in VS2015.

sfall/Modules/LoadGameHook.cpp

@@ -253,8 +253,9 @@ static void __declspec(naked) NewGame() {
 }
 
 static void ReadExtraGameMsgFilesIfNeeded() {
-	if (gExtraGameMsgLists.empty())
+	if (gExtraGameMsgLists.empty()) {
 		ReadExtraGameMsgFiles();
+	}
 }
 
 static bool PipBoyAvailableAtGameStart = false;

sfall/Modules/Message.h

@@ -18,6 +18,7 @@
 
 #pragma once
 
+#include <memory>
 #include <unordered_map>
 #include "..\main.h"