[kompare] [Bug 202457] "Next Difference/File" crashes when viewing a "move" diff

[Raúl]

https://bugs.kde.org/show_bug.cgi?id=202457

--- Comment #33 from Raúl <rasasi78 at gmail.com> ---
Created attachment 134446
  --> https://bugs.kde.org/attachment.cgi?id=134446&action=edit
New crash information added by DrKonqi

kompare (4.1.20120) using Qt 5.15.2

- What I was doing when the application crashed:
Debian sid. kompare 20.12.0, Qt 5.12.2
I reproduced like this: I used the most recent attached diff:
* curl https://bugsfiles.kde.org/attachment.cgi?id=70359 |gunzip >
kompare_crash.diff
* kompare kompare_crash.diff
* Go to first file in diff
* Start browsing using ctrl-pgup, ctrl-pgdown

-- Backtrace (Reduced):
#4  QListData::begin (this=<error reading variable: Cannot access memory at
address 0x40>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:118
#5  QList<Diff2::Difference*>::constBegin (this=<error reading variable: Cannot
access memory at address 0x40>) at
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:341
#6  KFileLVI::fillChangesList (this=0x0, changesList=0x55c63834cdb0,
diffToChangeItemDict=0x55c638324590) at
./komparenavtreepart/komparenavtreepart.cpp:627
#7  0x00007fe7bcb1767d in KompareNavTreePart::setSelectedFile
(this=0x55c638324560, model=0x55c638a5afd0) at
./komparenavtreepart/komparenavtreepart.cpp:339
#8  0x00007fe7bcb17a6a in KompareNavTreePart::slotSetSelection
(this=0x55c638324560, model=0x55c638a5afd0, diff=0x55c638a66170) at
./komparenavtreepart/komparenavtreepart.cpp:299

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