Fix issue 983 PDF UnicodeDecodeError

Parse PDF lines as unicode to prevent UnicodeDecodeError when a
non-ASCII character is encountered.

mediagoblin/media_types/pdf/processing.py

@@ -207,7 +207,7 @@ def pdf_info(original):
         _log.debug('pdfinfo could not read the pdf file.')
         raise BadMediaFail()
 
-    lines = [l.decode() for l in lines]
+    lines = [l.decode('utf-8', 'replace') for l in lines]
     info_dict = dict([[part.strip() for part in l.strip().split(':', 1)]
                       for l in lines if ':' in l])