Diffusion Krita 57686d84d4ee

Fix logic of the stroke lifetime in QMic

Authored by dkazakov on May 16 2019, 12:50 PM.

Description

Fix logic of the stroke lifetime in QMic

We shouldn't try to end the same stroke multiple times. The patch
also makes sure KisProcessingApplicator is owned by a scoped pointer
instead of manual handling.

BUG:407520