VLC Setup finds itself as if VLC Player is running

Scenario: VLC is not installed before, and is not running.

User downloads VLC Setup, and renames it as vlc.exe. User then runs the setup, and later the setup process (which is vlc.exe) says VLC is already running and needs to close. On confirmation from user, it closes itself.

Technically, VLC setup (and VLC itself) should use mutex to detect if VLC is running, not by finding by process name.