fix the urlstore tests
fix the urlstore tests

1. GC the intentionally broken files so we don't reuse their blocks.
2. Make sure we actually check the *new* output file instead of an old one.

License: MIT
Signed-off-by: Steven Allen <4068f0880b399410602d694b3cc711c8a8f4727e@stebalien.com>

chriscool/go-ipfs,Luzifer/go-ipfs,Luzifer/go-ipfs,chriscool/go-ipfs,chriscool/go-ipfs,Luzifer/go-ipfs