preparser: release preparser request on early return

src/media_source/media_tree.c

@@ -173,6 +173,7 @@ media_subtree_preparse_ended(vlc_preparser_req *req, int status, void *user_data
     if (!found) {
         /* the node probably failed to be allocated */
         vlc_media_tree_Unlock(tree);
+        vlc_preparser_req_Release(req);
         return;
     }
     vlc_media_tree_Notify(tree, on_preparse_end, subtree_root, status);

src/playlist/preparse.c

@@ -95,7 +95,10 @@ on_preparse_ended(vlc_preparser_req *req, int status, void *userdata)
     vlc_playlist_t *playlist = userdata;
 
     if (status != VLC_SUCCESS)
+    {
+        vlc_preparser_req_Release(req);
         return;
+    }
 
     vlc_playlist_Lock(playlist);
     ssize_t index = vlc_playlist_IndexOfMedia(playlist, media);