When encountering a strange value in the pool report, pidff_reset
will always refetch the report 20 times, even if one of the retries
results in a sane value. This is because a temporary variable being
used to store the value is not being updated inside the loop.

Fix it by using the value directly in the loop.
Reported-by: NRoel Kluin <roel.kluin@gmail.com>
Signed-off-by: NAnssi Hannula <anssi.hannula@iki.fi>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>