The code shamelessy copied from the old profile introduced
a bug where the old temperature was not correctly shown.
I'v added a new member to the class that will store the
last valid temperature, and use that to calculate if there's
a reason or not to display it.
Signed-off-by: Tomaz Canabrava <tomaz.canabrava@intel.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>