Copernicus
Industrial Grade Linguist
And? The court actions in question were in 1924.If by "him", you mean Hitler, he left Austria in 1913, renounced his Austrian citizenship in 1925, and became a German citizen in 1932. He hated Austria's multiethnic composition under the Habsburgs. He considered Austria proper to be a part of Germany. That's what the Anschluss was all about.
And bilby was correct that German-speaking nativists, especially in Bavaria, tended to think of Austria and Germany as part of the same country. Hitler himself considered himself German and moved to annex Austria after he came to power.