(svn r27290) -Fix: sanitize the command line arguments before doing anything complex with them

src/os/windows/win32.cpp

@@ -453,6 +453,9 @@ int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLi
 
 	argc = ParseCommandLine(cmdline, argv, lengthof(argv));
 
+	/* Make sure our arguments contain only valid UTF-8 characters. */
+	for (int i = 0; i < argc; i++) ValidateString(argv[i]);
+
 	openttd_main(argc, argv);
 	free(cmdline);
 	return 0;