Call app crash

[devcoe]

When someone make incoming call the app is going to crash. The same is on Debian and Windows 10. openMittsu version 0.9.11. Here is console output while call:

[2018-01-12 19:24:27.480] [main] [warning] Can not display MessageBox for Exception Handling: Not in main GUI thread.
[2018-01-12 19:24:27.480] [main] [critical] Caught an exception of type IllegalArgumentException in the main program loop with cause: Unknown Message Flag Bits are set: 21
Caught an exception of type IllegalArgumentException in the main program loop with cause: Unknown Message Flag Bits are set: 21
QSqlDatabasePrivate::removeDatabase: connection 'openMittsuDatabaseConnection' is still in use, all queries will cease to work.

[blizzard4591]

I have never used the call feature with my App. Thank you for providing this feedback, I will take a look at it to at least stop the crashes!