Ensure no improper rating filtering on start

src/bin/projectsortproxymodel.cpp

@@ -27,6 +27,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 ProjectSortProxyModel::ProjectSortProxyModel(QObject *parent)
     : QSortFilterProxyModel(parent)
     , m_searchType(0)
+    , m_searchRating(0)
 {
     m_collator.setLocale(QLocale());
     m_collator.setCaseSensitivity(Qt::CaseInsensitive);