Having a lot of tempo changes throws fluidsynth off-timing somewhy (compared to timidity and audacity midi parsing).

Attached file is one case where it happens. file1.midi has repeated tempo change tags that all change it to the exact same value. file2.midi has just the first of them. Effectively, they should be synthesized to the same audio, but in practice file1 is longer.

Reported by: velochy

Original Ticket: fluidsynth/tickets/143