Report of no error msg deliverd by NetHackw.exe for some startup issues

sys/winnt/stubs.c

@@ -22,6 +22,15 @@ mswin_destroy_reg()
 {
     return;
 }
+void
+mswin_raw_print_flush()
+{
+}
+
+void
+mswin_raw_print(const char *str)
+{
+}
 
 /* MINGW32 has trouble with both a main() and WinMain()
  * so we move main for the MINGW tty version into this stub