D28062: Fix compiler warnings

[Vlad Zahorodnii]

zzag added a comment.


  This change broke launching applications with arguments, e.g. `dbus-run-session kwin_wayland --width 1920 --height 1080 --xwayland "kate file.txt"`

REPOSITORY
  R108 KWin

REVISION DETAIL
  https://phabricator.kde.org/D28062

To: apol, #kwin, zzag
Cc: zzag, kwin, Orage, cacarry, LeGast00n, The-Feren-OS-Dev, cblack, jraleigh, zachus, fbampaloukas, mkulinski, ragreen, jackyalcine, iodelay, crozbo, bwowk, ZrenBot, ngraham, alexeymin, himcesjf, lesliezhai, ali-mohamed, hardening, romangg, jensreuterberg, abetts, sebas, apol, ahiemstra, mart
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