[PATCH] don't return uninitialized memory from bdiff.blocks()

[Alexis S. L. Carvalho]

Thus spake Erling Ellingsen:
> # HG changeset patch
> # User Erling Ellingsen <erlingalf at gmail.com>
> # Date 1172006416 -3600
> # Node ID 6cb1305943a62537f9929fcb699ef51aff3a23f9
> # Parent  e2ed92f4c0f759fe2a2803853bfcb92f135d85c5
> don't return uninitialized memory from bdiff.blocks()

I can't say I know the ins and outs of bdiff.c, but this looks
reasonable.

Pushed to crew-stable

Thanks

Alexis