Method DestroyIcon

src/Squirrel/ShellFile.cs:1088–1089

(IntPtr hIcon)

            uint uFlags);

        [DllImport("user32.dll")]
        static extern int DestroyIcon(IntPtr hIcon);

        const int FORMAT_MESSAGE_ALLOCATE_BUFFER = 0x100;
        const int FORMAT_MESSAGE_ARGUMENT_ARRAY = 0x2000;