Oliver Woodman 203f3ab732 Get the current extractor properly.
This fixes the case where we need to switch from one variant to
another during preparation, having loaded zero samples, because
the first chunk for that variant gave us a 404 error. In this
case the first extractor will have no samples, and there will
be a second extractor that does.
2015-06-19 13:31:16 +01:00
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2015-06-19 13:31:16 +01:00
2015-05-28 17:19:30 +01:00