GHCJS.libAbiHash: exclude trailing newline.
GHCJS.libAbiHash: exclude trailing newline.

Already fixed in the parent module in
20e35704299bc1a38e81b289800fa7cfd49ce8cf.

Fixes #3915.

themoritz/cabal,themoritz/cabal,mydaum/cabal,themoritz/cabal,mydaum/cabal