Fixed assert error

companion/src/appdata.h

@@ -287,7 +287,7 @@ class AppData: protected CompStoreObj
     int iconSize();
     int historySize();
     int jsCtrl();
-    int modelEditTab();
+    int modelEditTab();  // This variable is unused an can be removed
     int id();
     int theme();
     int warningId();

companion/src/burndialog.cpp

@@ -141,6 +141,8 @@ void burnDialog::on_FlashLoadButton_clicked()
   QTimer::singleShot(0, this, SLOT(shrink()));
   if (hexType==FLASH_FILE_TYPE) {
     fileName = QFileDialog::getOpenFileName(this, tr("Open Firmware File"), g.flashDir(), FLASH_FILES_FILTER);
+    if(fileName.isEmpty())
+      return;
     checkFw(fileName);
   }
   else {