minor bug in music player

[ScytheandGenesisGames]

When you make music in the built-in uge tracker player and fill the 63 pattern limit and if you add a new note will just crash GB studio as it will not go back to the top

1. make a blank .uge file in GBStudio's music player/editor
2. make random notes on duty 1
3. repeat until at 63
4. hit one more to overlow to 64
5. crash GBStudio

Seems it's supposed to go back to the top if you hit pattern 63 aka pattern 64.

might be something in code that been left out but if one's not careful they could crash GB Studio and lose their music they been working on.