r7797 crash

[Jan Gruuthuse]

Regular crashes occur while indexing MPEG-TS .TRP, when restarting avidemux and trying to save work crashes again. Not trying to save and reloading .TRP, index files seems to be OK. Info Window text:

Crash

Assert failed :0
at line 234, file /home/jan/avidemux_2.6_branch_mean/avidemux/qt4/common/ADM_editor/src/ADM_segment.cppADM_backTrack
ADM_EditorSegment::getSegment(int)
ADM_edAudioTrackFromVideo::getInfo()
/usr/bin/avidemux3_qt4() [0x42f6f3]
A_openAvi(char const*)
ADM_QT4_fileSel::GUI_FileSelRead(char const*, void (*)(char const*))
HandleAction(Action)
MainWindow::searchToolBar(QAction*)
MainWindow::qt_metacall(QMetaObject::Call, int, void**)
QMetaObject::activate(QObject*, QMetaObject const*, int, void**)
QToolBar::actionTriggered(QAction*)
QToolBar::qt_metacall(QMetaObject::Call, int, void**)
QMetaObject::activate(QObject*, QMetaObject const*, int, void**)
QToolButton::triggered(QAction*)
QToolButton::qt_metacall(QMetaObject::Call, int, void**)
QMetaObject::activate(QObject*, QMetaObject const*, int, void**)
QAction::triggered(bool)
QAction::activate(QAction::ActionEvent)

QAbstractButton::mouseReleaseEvent(QMouseEvent*)

Info Window text after restarting avidemux and try to keep/save work:

Crash
Segfault
at line 0, file ??ADM_backTrack

A_parseTinyPyScript(char const*)
checkCrashFile()
UI_RunApp()
startAvidemux(int, char**)
__libc_start_main
/usr/bin/avidemux3_qt4() [0x42eeb1]