I can't reproduce on the latest nightly (OS: Windows 7 SP 1 (6.1), Arch.: i386, MuseScore version (32-bit): 3.0.0, revision: c47771b) or version 2.2.1. Your link to a Git commit is dated 2016(!). On what version are you? The latest stable release was 2.2.1, released April 2018. Maybe you should upgrade and see if the problem persists. If it is still there, you need to give more info.
Comments
Can you attach as sample score that demonstrates this crash? What OS?
I can't reproduce on the latest nightly (OS: Windows 7 SP 1 (6.1), Arch.: i386, MuseScore version (32-bit): 3.0.0, revision: c47771b) or version 2.2.1. Your link to a Git commit is dated 2016(!). On what version are you? The latest stable release was 2.2.1, released April 2018. Maybe you should upgrade and see if the problem persists. If it is still there, you need to give more info.
That user left us and so will never answer