contrib/wix/defines.wxi

convert: fix argument mismatch at formatting the abort message

This patch fixes argument mismatch at formatting the abort message,
introduced by a204fd9b5ba9: the last '%s' doesn't have corresponded
argument.

This patch uses "unexpected size" in the abort message, to distinguish
the reason of failure from "unexpected type" failure checked in the
prior code path below:

        if info[1] != type:
            raise util.Abort(_('cannot read %r object at %s') % (type, rev))

<Include>

  <?if $(var.Platform) = "x64" ?>
    <?define IsX64 = yes ?>
  <?else?>
    <?define IsX64 = no ?>
  <?endif?>

</Include>