Common: Cleanup key_map includes.

src/core/loader/loader.cpp

@@ -2,6 +2,7 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
+#include <memory>
 #include <string>
 
 #include "common/logging/log.h"

src/core/loader/loader.h

@@ -4,6 +4,7 @@
 
 #pragma once
 
+#include <memory>
 #include <vector>
 
 #include "common/common_types.h"