qubes-session-autostart: do not abort the whole process on invalid file

misc/qubes-session-autostart

@@ -68,6 +68,7 @@ def process_autostart(environments):
             # make the entry as processed, even if not actually started
             processed_entries[entry_name] = True
 
+            try:
                 entry_path = os.path.join(path, entry_name)
                 # files in $HOME have higher priority than dropins
                 if not path.startswith(xdg.BaseDirectory.xdg_config_home):
@@ -76,6 +77,10 @@ def process_autostart(environments):
                     entry = DesktopEntry(entry_path)
                 if entry_should_be_started(entry, environments):
                     launch(entry_path)
+            except Exception as e:
+                print >>sys.stderr, "Failed to process '{}': {}".format(
+                    entry_name, str(e)
+                )
 
 def main():
     process_autostart(sys.argv[1:])