char stuff[200];
char *stuff;
void modalfatalbox(char *fmt, ...){    va_list ap;    char stuff[200];    va_start(ap, fmt);    vsprintf(stuff, fmt, ap);    va_end(ap);    MessageBox(NULL, stuff, "PuTTYgen Fatal Error",	       MB_SYSTEMMODAL | MB_ICONERROR | MB_OK);    exit(1);}