Ardour/ardour — pull request #100 by jdekozak (2014-12-07 16:17:40+00:00)
Title: Fix crash if new tempo is set to start at bar #0

Hi

Playing with the Ardour, I have noticed that setting a bar value to 0 in the "New Tempo" or "New Meter" dialog box was leading to a crash, an assert was throwing.

Please find what I consider as a fix, as usual, let me know your remarks I will try to comply with all of them.

Regards,
Julien