fix open_files() on BSD where it seems sometimes lsoft return file objects without type specified
fix open_files() on BSD where it seems sometimes lsoft return file objects without type specified

mindw/psutil,mindw/psutil,msarahan/psutil,qbit/psutil,cloudbase/psutil,landryb/psutil,tomprince/psutil,jorik041/psutil,msarahan/psutil,packages/psutil,jorik041/psutil,msarahan/psutil,Q-Leap-Networks/psutil,landryb/psutil,jorik041/psutil,qbit/psutil,tomprince/psutil,cloudbase/psutil,jamesblunt/psutil,jamesblunt/psutil,mrjefftang/psutil,landryb/psutil,mrjefftang/psutil,mindw/psutil,landryb/psutil,cloudbase/psutil,giampaolo/psutil,mindw/psutil,Q-Leap-Networks/psutil,landryb/psutil,tomprince/psutil,mindw/psutil,mrjefftang/psutil,jamesblunt/psutil,tomprince/psutil,0-wiz-0/psutil,tomprince/psutil,packages/psutil,qbit/psutil,packages/psutil,0-wiz-0/psutil,giampaolo/psutil