[fix] preventing to load null application null icon

bauh/view/qt/apps_table.py

@@ -203,12 +203,14 @@ class AppsTable(QTableWidget):
 
             icon_was_cached = False
             pixmap = QPixmap()
-
             pixmap.loadFromData(icon_bytes)
+
+            if not pixmap.isNull():
                 icon = QIcon(pixmap)
                 icon_data = {'icon': icon, 'bytes': icon_bytes}
                 self.icon_cache.add(icon_url, icon_data)
 
+        if icon_data:
             for idx, app in enumerate(self.window.pkgs):
                 if app.model.icon_url == icon_url:
                     col_name = self.item(idx, 0)