Do not call resize_image_to_height on smaller images

tubesync/sync/tasks.py

@@ -501,6 +501,7 @@ def download_media_thumbnail(media_id, url):
     width = getattr(settings, 'MEDIA_THUMBNAIL_WIDTH', 430)
     height = getattr(settings, 'MEDIA_THUMBNAIL_HEIGHT', 240)
     i = get_remote_image(url)
+    if (i.width > width) and (i.height > height):
         log.info(f'Resizing {i.width}x{i.height} thumbnail to '
                  f'{width}x{height}: {url}')
         i = resize_image_to_height(i, width, height)