Fix mime-type property for thumbnails not being queried properly.
Fix mime-type property for thumbnails not being queried properly.

Was getting the attributes and type from the wrong list.

KDE/android-qt-mobility,KDE/android-qt-mobility,enthought/qt-mobility,enthought/qt-mobility,enthought/qt-mobility,kaltsi/qt-mobility,kaltsi/qt-mobility,tmcguire/qt-mobility,tmcguire/qt-mobility,kaltsi/qt-mobility,tmcguire/qt-mobility,qtproject/qt-mobility,tmcguire/qt-mobility,qtproject/qt-mobility,tmcguire/qt-mobility,qtproject/qt-mobility,kaltsi/qt-mobility,enthought/qt-mobility,KDE/android-qt-mobility,enthought/qt-mobility,enthought/qt-mobility,qtproject/qt-mobility,KDE/android-qt-mobility,kaltsi/qt-mobility,qtproject/qt-mobility,kaltsi/qt-mobility,qtproject/qt-mobility