Bug 368123

When closing gwenview-16.04.3 it crashed without reason. This does seem to be random crash and is hard to make it happen again.

Reproducible: Couldn't Reproduce

Steps to Reproduce:
1. Open up a image.
2. Change to an other image.
3. Close gwenview.

Actual Results:  
On closing the gwenview crashes, this crash is difficult to make happen and might only happen once in a while without clear reason.

Expected Results:  
The program should close normally.

Application: Gwenview (gwenview), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f5c4d1c3800 (LWP 19795))]

Thread 2 (Thread 0x7f5c3282e700 (LWP 19797)):
#0  0x00007f5c48600dcd in read () from /lib64/libc.so.6
#1  0x00007f5c42171090 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f5c4212fcd4 in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f5c421301b0 in ?? () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f5c4213031c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#5  0x00007f5c48eaefdc in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#6  0x00007f5c48e63192 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#7  0x00007f5c48cc2aa4 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#8  0x00007f5c4d5541dd in ?? () from /usr/lib64/libQt5DBus.so.5
#9  0x00007f5c48cc717b in ?? () from /usr/lib64/libQt5Core.so.5
#10 0x00007f5c437e642c in start_thread () from /lib64/libpthread.so.0
#11 0x00007f5c4860db9d in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f5c4d1c3800 (LWP 19795)):
[KCrash Handler]
#6  0x00007f5c491f3842 in ?? () from /usr/lib64/libQt5Gui.so.5
#7  0x00007f5c491f3911 in QImageReader::~QImageReader() () from /usr/lib64/libQt5Gui.so.5
#8  0x00007f5c49209a4c in QMovie::~QMovie() () from /usr/lib64/libQt5Gui.so.5
#9  0x00007f5c4cca85d1 in ?? () from /usr/lib64/libgwenviewlib.so.5
#10 0x00007f5c4cca8629 in ?? () from /usr/lib64/libgwenviewlib.so.5
#11 0x00007f5c4ccab589 in Gwenview::Document::~Document() () from /usr/lib64/libgwenviewlib.so.5
#12 0x00007f5c4ccabba1 in Gwenview::Document::~Document() () from /usr/lib64/libgwenviewlib.so.5
#13 0x00007f5c4ccb1850 in ?? () from /usr/lib64/libgwenviewlib.so.5
#14 0x00007f5c4ccb117d in Gwenview::DocumentFactory::~DocumentFactory() () from /usr/lib64/libgwenviewlib.so.5
#15 0x00007f5c4855c4b8 in ?? () from /lib64/libc.so.6
#16 0x00007f5c4855c505 in exit () from /lib64/libc.so.6
#17 0x00007f5c48547617 in __libc_start_main () from /lib64/libc.so.6
#18 0x000000000042b6b9 in _start ()