[http] Fix ‘err’ variable not being assigned in an except block (#2045)

diff --git a/youtube_dl/downloader/http.py b/youtube_dl/downloader/http.py
index 14b88efd3d951345effe95959f72a82575e094d5..8407727ba43df75a31a53d073cbd430877157b29 100644 (file)
--- a/youtube_dl/downloader/http.py
+++ b/youtube_dl/downloader/http.py
@@ -133,7 +133,7 @@ class HttpFD(FileDownloader):
                     return False
             try:
                 stream.write(data_block)
-            except (IOError, OSError):
+            except (IOError, OSError) as err:
                 self.to_stderr(u"\n")
                 self.report_error(u'unable to write data: %s' % str(err))
                 return False