Diffusion Krita 07167cd2d884

Add a workaround for KisShortcutsMatcher assert

Authored by dkazakov on Jul 29 2019, 10:16 AM.

Description

Add a workaround for KisShortcutsMatcher assert

The problem is caused by execution flow entering KisShortcutsMatcher
recursively because of doing QApplication::processEvent in the tool's
event hander.

CCBUG:408826
BACKPORT:krita/4.2