Issue #3444986: Empty file doesn't trigger clean() to delete all imported items

Signed-off-by: Nigel Cunningham nigel@nigelcunningham.com.au

Closes #3444986

src/EventSubscriber/LazySubscriber.php

@@ -114,6 +114,13 @@ class LazySubscriber implements EventSubscriberInterface {
             }
           }
 
+          // Initialize the feed immediately after parsing, this ensures that
+          // item clean ups are triggered even if there are no items to process.
+          $feed
+            ->getType()
+            ->getProcessor()
+            ->initialize($feed);
+
           // Finally set the parser result on the event.
           $event->setParserResult($result);
         });