Fix Ringslinger weapon ring penalty missplitment

When firing a weapon ring in Ringslinger while you have 0 rings, it costs 2 weapon ring ammunition. This is shown by a red "-2" being shown in the weapon selection.

This merge request fixes the penalty not having V_PERPLAYER despite the rest of the weapon selection having it, previously causing it to be shown on player 2's screen in splitscreen, regardless of who fired it.

Closes #684 (closed).