Another round of cleanups - the main code no longer refers to, let alone uses, anything in the platform folder - completely separated!

src/cdrom/cdrom.c

@@ -22,6 +22,7 @@
 #include <stdarg.h>
 #include <wchar.h>
 #include "../86box.h"
+#include "../config.h"
 #include "../ibm.h"
 #include "../timer.h"
 #include "../device.h"
@@ -4012,3 +4013,22 @@ void cdrom_general_init(void)
 	}
     }
 }
+
+
+void
+cdrom_close(uint8_t id)
+{
+    switch (cdrom_drives[id].host_drive) {
+	case 0:
+		null_close(id);
+		break;
+
+	case 200:
+		image_close(id);
+		break;
+
+	default:
+		ioctl_close(id);
+		break;
+    }
+}