Go to empty trailing measure bug

I've found an error-case in my "Go to first empty trailing measure" command (3.5 Beta):

1) Let score's first staff having no empty trailing measure (all measures are filled with some score data, or at least let the last measure not be a whole rest.)
2) Make sure to have no element selected at all
3) Issue the command
Result: Crash

I intend to fix this very soon. Odds are no one else will trigger this problem since it's new and the above steps are a rare use-case, but it's gotta be fixed before anyone else finds it >:D