Save State issue in TT mode

[Pyman75]

When reloading from a previous save state in TT mode, the Hatari screen resolution changes, so you have a small visible area and a large black border all around.

[bbbradsmith]

I will take a look at this when I can. Thank you. Do you happen to know if this behaviour is also an issue in stand alone Hatari 2.5.0? Or is it only the hatarib core that does this?