Corrected the lettercase to fix GCC compile.

Extras/LuaScript/SceneLuaAPI.h

@@ -23,7 +23,7 @@
 #pragma once
 
 #include "Context.h"
-#include "scene.h"
+#include "Scene.h"
 
 namespace Urho3D
 {
@@ -31,4 +31,4 @@ namespace Urho3D
     {
         return 0;
     }
-}
+}