CanalPlus Extractor: Matcher exception not catched

[facke]

The canalplus extractor use mobj.group('id') to extract the video_id from the URL but it may not contain contain any ID which lead to AttributeException and stop the process.
The extractor should use the groupdict to get the potential id.

--- a/youtube_dl/extractor/canalplus.py
+++ b/youtube_dl/extractor/canalplus.py
@@ -26,7 +26,7 @@ class CanalplusIE(InfoExtractor):

     def _real_extract(self, url):
         mobj = re.match(self._VALID_URL, url)
-        video_id = mobj.group('id')
+        video_id = mobj.groupdict().get('id')

         if video_id is None:
             webpage = self._download_webpage(url, mobj.group('path'))

[phihag]

Thank you for the report. Can you add the full output you get when you
run youtube-dl (without the patch) with the --verbose option? That
output allows us to generate a testcase so that we can automatically
prevent this issue from ever happening again.

[facke]

Here an example:

youtube-dl -v  "http://www.d8.tv/d8-divertissement/ms-touche-pas-a-mon-poste/pid6318-videos-integrales.html?vid=1062920"
[debug] System config: []
[debug] User config: []
[debug] Command-line args: ['-v', 'http://www.d8.tv/d8-divertissement/ms-touche-pas-a-mon-poste/pid6318-videos-integrales.html?vid=1062920']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2014.04.30.1
[debug] Python version 2.7.5+ - Linux-2.6.32-x86_64
[debug] Proxy map: {}
Traceback (most recent call last):
  File "/usr/lib/python2.7/runpy.py", line 162, in _run_module_as_main
    "__main__", fname, loader, pkg_name)
  File "/usr/lib/python2.7/runpy.py", line 72, in _run_code
    exec code in run_globals
  File "/usr/local/bin/youtube-dl/__main__.py", line 18, in <module>
  File "/usr/local/bin/youtube-dl/youtube_dl/__init__.py", line 846, in main
  File "/usr/local/bin/youtube-dl/youtube_dl/__init__.py", line 836, in _real_main
  File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 1039, in download
  File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 516, in extract_info
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 161, in extract
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/canalplus.py", line 29, in _real_extract
IndexError: no such group

It's a logical error:

video_id = mobj.group('id') # video_id contain a value or an exception is thrown
if video_id is None: # Can not be triggered in any case!