Wrong message when killed by falling anvil

[ghost]

Being crushed by a falling anvil results in the pve.melee message being displayed:

"[PvE] was killed by a FallingSand"

Configuring a message for pve.fallingsand in messages.yml works correctly, but does not allow differentiation between types of falling block - the existence of a pve.anvil message in the default messages.yml implies that this is not the expected behaviour.