Use new EcuItem::find method where possible

Signed-off-by: Viktor Kopp <vifactor@gmail.com>

src/mainwindow.cpp

@@ -5499,26 +5499,16 @@ void MainWindow::on_action_menuDLT_Send_Injection_triggered()
 
 void MainWindow::controlMessage_SetApplication(EcuItem *ecuitem, QString apid, QString appdescription)
 {
-    /* Try to find App */
-    for(int numapp = 0; numapp < ecuitem->childCount(); numapp++)
-    {
-        ApplicationItem * appitem = (ApplicationItem *) ecuitem->child(numapp);
-
-        if(appitem->id == apid)
-        {
-            appitem->description = appdescription;
-            appitem->update();
-            return;
-        }
+    if (auto appitem = ecuitem->find(apid); appitem) {
+        appitem->description = appdescription;
+        appitem->update();
+    } else {
+        appitem = new ApplicationItem(ecuitem);
+        appitem->id = apid;
+        appitem->description = appdescription;
+        appitem->update();
+        ecuitem->addChild(appitem);
     }
-
-    /* No app and no con found */
-    ApplicationItem* appitem = new ApplicationItem(ecuitem);
-    appitem->id = apid;
-    appitem->description = appdescription;
-    appitem->update();
-    ecuitem->addChild(appitem);
-
 }
 
 void MainWindow::controlMessage_SetContext(EcuItem *ecuitem, QString apid, QString ctid,QString ctdescription,int log_level,int trace_status)