fixed filter update in historical view

src/alarm.cpp

@@ -384,7 +384,7 @@ void Alarm::queryDB()
 
     printf("executing query \"%s\"\n", qstoc(query));
 
-    m_filter->filter();
+    m_filter->filter(true);
     QApplication::restoreOverrideCursor();
 }
 

src/filter.h

@@ -39,14 +39,14 @@ public:
         changed = true;
     }
 
-    void filter();
+    void filter(bool force = false);
 
     QMap<int, QString> fmap; // filter map
     QTreeView *m_v;
 };
 
-inline void AlarmFilter::filter() {
-    if(changed) {
+inline void AlarmFilter::filter(bool force) {
+    if(changed || force) {
         changed = false;
         QAbstractItemModel *m = m_v->model();
         for(int i = 0; i < m->rowCount(); i++) {