Use ScopedHandle for File::Handle

components/files/constrainedfilestreambuf.hpp

@@ -22,7 +22,7 @@ namespace Files
     private:
         std::size_t mOrigin;
         std::size_t mSize;
-        Platform::File::Handle mFile{ Platform::File::Handle::Invalid };
+        Platform::File::ScopedHandle mFile;
         char mBuffer[8192]{ 0 };
     };
 }

components/platform/file.hpp

@@ -29,7 +29,17 @@ namespace Platform::File {
 
     size_t read(Handle handle, void* data, size_t size);
 
-
+    class ScopedHandle
+    {
+        Handle mHandle{ Handle::Invalid };
+        
+    public:
+        ScopedHandle() = default;
+        ScopedHandle(Handle handle) : mHandle(handle) {}
+        ~ScopedHandle() { close(mHandle); }
+
+        operator Handle() const { return mHandle; }
+    };
 }
 
 #endif // OPENMW_COMPONENTS_PLATFORM_FILE_HPP