Fix compilation
Summary:
Without this patch, plasma-workspace fails to compile for me with the following error:
In file included from /home/nate/kde/build/plasma-workspace/runners/windows/krunner_windows_autogen/EWIEGA46WW/moc_windowsrunner.cpp:10,
from /home/nate/kde/build/plasma-workspace/runners/windows/krunner_windows_autogen/mocs_compilation.cpp:2:
/home/nate/kde/build/plasma-workspace/runners/windows/krunner_windows_autogen/EWIEGA46WW/../../../../../../src/plasma-workspace/runners/windows/windowsrunner.h:61:9: error: ‘QMutex’ does not name a type
61 | QMutex m_mutex;
| ^~~~~~Test Plan: It compiles now
Reviewers: Plasma, aacid
Reviewed By: aacid
Subscribers: plasma-devel
Tags: Plasma
Differential Revision: https://phabricator.kde.org/D22976