Greatly simplify LRG lemma 5.10 proof
Greatly simplify LRG lemma 5.10 proof

Oops, assumed the paper stated lemma 5.8 for this proof, but this turned
out to be false, 5.10 is a really simple proof on its own once all the
definitions are unfolded.

mit-pdos/fscq-impl,mit-pdos/fscq-impl,mit-pdos/fscq-impl,mit-pdos/fscq-impl,mit-pdos/fscq-impl