[ui] fix -> icons that cannot be rendered are being displayed as an empty space

CHANGELOG.md

@@ -86,6 +86,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - UI
     - crashing when nothing can be upgraded
     - random C++ wrapper errors with some forms due to missing references
+    - icons that cannot be rendered are being displayed as an empty space (now the type icon is displayed instead)
 
 
 ## [0.9.6] 2020-06-26

bauh/view/qt/apps_table.py

@@ -426,7 +426,11 @@ class AppsTable(QTableWidget):
             else:
                 try:
                     icon = QIcon.fromTheme(icon_path)
-                    self.icon_cache.add_non_existing(pkg.model.icon_url, {'icon': icon, 'bytes': None})
+
+                    if icon.isNull():
+                        icon = QIcon(pkg.model.get_default_icon_path())
+                    else:
+                        self.icon_cache.add_non_existing(pkg.model.icon_url, {'icon': icon, 'bytes': None})
 
                 except:
                     icon = QIcon(pkg.model.get_default_icon_path())