Limelight extractor crashes if "pc" playlist is empty

[scarpentier]

Make sure you are using the latest version: run youtube-dl --version and ensure your version is 2017.12.31. If it's not, read this FAQ entry and update. Issues with outdated version will be rejected.

• I've verified and I assure that I'm running youtube-dl 2017.12.31

Before submitting an issue make sure you have:

• At least skimmed through the README, most notably the FAQ and BUGS sections
• Searched the bugtracker for similar issues including closed ones

What is the purpose of your issue?

• Bug report (encountered problems with youtube-dl)
• Site support request (request for adding support for a new site)
• Feature request (request for a new functionality)
• Question
• Other

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If the purpose of this issue is a bug report, site support request or you are not completely sure provide the full verbose output:

youtube-dl -v http://zonevideo.telequebec.tv/media/36377/tourlou-2017/les-appendices
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-v', 'http://zonevideo.telequebec.tv/media/36377/tourlou-2017/les-appendices']
[debug] Encodings: locale cp1252, fs mbcs, out cp850, pref cp1252
[debug] youtube-dl version 2017.12.31
[debug] Python version 3.4.4 - Windows-10-10.0.16299
[debug] exe versions: ffmpeg 3.4.1, ffprobe 3.4.1
[debug] Proxy map: {}
[TeleQuebec] 36377: Downloading JSON metadata
[debug] Using fake IP 99.228.126.100 (CA) as X-Forwarded-For.
[limelight] d68f6662f6d846c8954487150dc19f5a: Downloading PlaylistService getPlaylistByMediaId JSON
[limelight] d68f6662f6d846c8954487150dc19f5a: Downloading API properties JSON
[limelight] d68f6662f6d846c8954487150dc19f5a: Downloading PlaylistService getMobilePlaylistByMediaId JSON
Traceback (most recent call last):
  File "__main__.py", line 19, in <module>
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpiyv5xz5s\build\youtube_dl\__init__.py", line 465, in main
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpiyv5xz5s\build\youtube_dl\__init__.py", line 455, in _real_main
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpiyv5xz5s\build\youtube_dl\YoutubeDL.py", line 1988, in download
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpiyv5xz5s\build\youtube_dl\YoutubeDL.py", line 795, in extract_info
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpiyv5xz5s\build\youtube_dl\YoutubeDL.py", line 861, in process_ie_result
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpiyv5xz5s\build\youtube_dl\YoutubeDL.py", line 784, in extract_info
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpiyv5xz5s\build\youtube_dl\extractor\common.py", line 438, in extract
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpiyv5xz5s\build\youtube_dl\extractor\limelight.py", line 286, in _real_extract
IndexError: list index out of range

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If the purpose of this issue is a site support request please provide all kinds of example URLs support for which should be included (replace following example URLs by yours):

• Single video: http://zonevideo.telequebec.tv/media/36377/tourlou-2017/les-appendices