dbusUtils: add try catch to catch error when getDbusProperty failed

     Avoid to getDbusProperty fail, when sensor service is broken after
     sensor propertiesChanged signal be triggered. And then return NaN.

Signed-off-by: Harvey Wu <Harvey.Wu@quantatw.com>
Change-Id: Ibd73eb27cfd6274ab56ea7d74db98fdd7d7c1734
1 file changed