Ensure we close the extraction info file
Ensure we close the extraction info file

Not closing the file is the incorrect thing to do and may lead to
unexpected behaviour.

Change-Id: Ib22d05e34a5b6bd46444b15d3fa9cd5c1577f4af
Reviewed-by: Michael Wang <a1d3ba210bf34de1d477689b183bd73805f49ef6@alliedtelesis.co.nz>
Reviewed-by: Scott Parlane <85029adc3fa41ef14594a57826619713bfe95f25@alliedtelesis.co.nz>
Signed-off-by: Scott Parlane <85029adc3fa41ef14594a57826619713bfe95f25@alliedtelesis.co.nz>

alliedtelesis/buildsyspp,ATL-NZ/buildsyspp