Comment 0 for bug 1049174

There is no need for a correct fil_space_create() flags value: it is never queried in the short-lived XtraBackup InnoDB file system instance, that is live only around delta application time. A valid flag value avoids assertion failures inside fil_space_create(), but it simply enough for it to be any correct value (e.g. 0).

This is alternate (better) fix for bug 1028949, regression from bug 932623, invalidates bug 1043762 and bug 1044398.