another segfault with timewise delete

• Jan 25, 2017 - 13:17

new score
add key sig to first meas
add key sig to second measure
select second measure
Ctrl->Del

stack trace:

1   QListData::size                                                                                                qlist.h           107  0xe0acea   
2   QList::size                                                                                     qlist.h           160  0xdf9f83   
3   Ms::Selection::element                                                                                         select.cpp        142  0x77fb1a   
4   Ms::Score::cmdTimeDelete                                                                                       cmd.cpp           2968 0x7a5d30   
5   Ms::Score::::operator()(void) const                                                                  cmd.cpp           3250 0x7a70e1   
6   std::_Function_handler>::_M_invoke(const std::_Any_data &) functional        2039 0x7aff2b   
7   std::function::operator()() const                                                                     functional        2439 0xe1e442   
8   Ms::Score::cmd                                                                                                 cmd.cpp           3268 0x7a83ee   
9   Ms::ScoreView::cmd                                                                                             scoreview.cpp     3260 0x414535   
10  Ms::MuseScore::cmd                                                                                             musescore.cpp     4978 0x49fd30   
11  Ms::MuseScore::cmd                                                                                             musescore.cpp     4524 0x49d994   
12  Ms::MuseScore::qt_static_metacall                                                                              moc_musescore.cpp 733  0x69ab98   
13  ZN11QMetaObject8activateEP7QObjectiiPPv                                                                                               0x68a08842 
14  Ms::ScoreTab::actionTriggered                                                                                  moc_scoretab.cpp  193  0x6a0eb7   
15  Ms::ScoreTab::qt_static_metacall                                                                               moc_scoretab.cpp  95   0x6a0b89   
16  ZN11QMetaObject8activateEP7QObjectiiPPv                                                                                               0x68a08842 
17  ZN12QActionGroup7hoveredEP7QAction                                                                                                    0x1dc15295 
18  ??                                                                                                                                    0x208f6d90 
19  ZN7QAction8activateENS_11ActionEventE                                                                                                 0x1dc14248 
20  ??                                                                                                                                    0x1d1ecdb8

on windows 10 x86-64 https://github.com/musescore/MuseScore/commit/c82b63b6012fe70d69fa737cf…