Fix bug when the vimeo description is empty on Python 2.x.

diff --git a/youtube_dl/InfoExtractors.py b/youtube_dl/InfoExtractors.py
index aa8074a9e7d7c5fd690a6a31f5f8f5354d1ffcb5..82ba634499660c8cacc0b4494596bbc99ecbb587 100755 (executable)
--- a/youtube_dl/InfoExtractors.py
+++ b/youtube_dl/InfoExtractors.py
@@ -1130,7 +1130,7 @@ class VimeoIE(InfoExtractor):
         # Extract video description
         video_description = get_element_by_attribute("itemprop", "description", webpage)
         if video_description: video_description = clean_html(video_description)
-        else: video_description = ''
+        else: video_description = u''
 
         # Extract upload date
         video_upload_date = None