Crash on copy of selected chord symbols

Windows 7, GIT commit: c67a0ae

1) open attached score (just an empty score with a few chord symbols added)
2) right click first chord symbol, select all similar
3) Ctrl+C

Result: crash

There is a null pointer deref in select.cpp:704. I thought at first the issue might have to do with chords attached to segments with no notes, but it crashes the same way even if you fill the first few measures with notes.