fix support for ted.com

[Siddhant]

$ youtube-dl --verbose "https://www.ted.com/talks/douglas_adams_parrots_the_universe_and_everything"
[debug] System config: []
[debug] User config: []
[debug] Command-line args: ['--verbose', 'https://www.ted.com/talks/douglas_adams_parrots_the_universe_and_everything']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2014.10.13
[debug] Python version 2.7.8 - Linux-3.16.0-18-generic-x86_64-with-Ubuntu-14.10-utopic
[debug] Proxy map: {'http': 'REDACTED', 'https': 'REDACTED'}
[TED] douglas_adams_parrots_the_universe_and_everything: Downloading webpage
[TED] douglas_adams_parrots_the_universe_and_everything: Extracting information
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
File "/usr/local/bin/youtube-dl/youtube_dl/init.py", line 431, in main
File "/usr/local/bin/youtube-dl/youtube_dl/init.py", line 421, in _real_main
File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 1067, in download
File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 524, in extract_info
File "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 193, in extract
File "/usr/local/bin/youtube-dl/youtube_dl/extractor/ted.py", line 88, in _real_extract
File "/usr/local/bin/youtube-dl/youtube_dl/extractor/ted.py", line 121, in _talk_info
AttributeError: 'NoneType' object has no attribute 'items'

[jaimeMF]

Thanks for the report, it will work in the next version.

[phihag]

This fix has made it into youtube-dl 2014.10.26. Refer to our FAQ if you need help updating.