physgun_switch crashes the server if the player entity is gone

[Nafrayu]

Describe the bug
The command "physgun_switch" crashes the server if the player entity is gone (e.g. player has been accidentally removed by a trigger/button)

To Reproduce

• Somehow manage to remove yourself
• Enter physgun_switch into the console
• The server crashes

Expected behavior
The server shouldn't crash

Additional context
Since commands like "use weapon_ar2", "lastinv", or "phys_swap" don't crash the server i think this should be fixed so the commands behaviour is in-line with the rest of source.

I realize that this is super obscure, and should only happen if sv_cheats is enabled, or on really terribly made maps - please just mark as "Won't fix" if this is isn't a priority.

[TEAMJBMOD]

Fixed in the next release