scrolling: remove redundant workspace check

[outercloudstudio]

Fixes #503

Removes second redundant check.

if (!workspace || !workspace) {
        Debug::log(ERR, "[scroller] broken internal state on workspace data");
        return;
}

https://github.com/hyprwm/hyprland-plugins/blob/7be897d6ae765fab756c0b7e6b91e8c5b39a419e/hyprscrolling/Scrolling.cpp#L278C3-L281C6

Changed to

if (!workspace) {
        Debug::log(ERR, "[scroller] broken internal state on workspace data");
        return;
}

[vaxerski]

hey hey do the zombie stomp