Summary:
Compiler: GCC 7.3.1
Distro: Arch Linux

Warning:

```
/home/vlad/KDE/src/kde/workspace/kwin/effects/presentwindows/presentwindows.cpp: In member function ‘void KWin::PresentWindowsEffect::rearrangeWindows()’:
/home/vlad/KDE/src/kde/workspace/kwin/effects/presentwindows/presentwindows.cpp:970:45: warning: ‘*’ in boolean context, suggest ‘&&’ instead [-Wint-in-bool-context]
                 m_gridSizes[screen].columns * m_gridSizes[screen].rows &&
```

Reviewers: #kwin, davidedmundson

Reviewed By: davidedmundson

Subscribers: davidedmundson, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D12209