Allows pyro spec flamer tanks to accept custom fuel

[Git-Nivrak]

About the pull request

Allows pyro spec's fuel tanks to accept custom fuel

Explain why it's good for the game

No reason for the spec known for using flames to be left behind with the new flamer fuels that can be made now

Testing Photographs and Procedure

Screenshots & Videos

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Changelog

:cl: balance: Allows pyro spec flamer tanks to accept custom fuels. /:cl:

[Drulikar]

Why? Its the whole point of /obj/item/ammo_magazine/flamer_tank/custom/large

Only custom tanks should be allowed to use custom fuels.

[Git-Nivrak]

Oh didn't know that existed lol

[iloveloopers]

upgraded spec custom tank when?