BlockFire uses getFlammability() for everything.
Seems it got lost with the 1.8 update when all calls to BlockFire.func_176534_d() got re-routed to Block.getFlammability() or Block.isFlammable() instead of to Block.getFireSpreadSpeed().
Seems to of gotten transposed sometime in the past. Thanks for the report.
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Seems to of gotten transposed sometime in the past. Thanks for the report.