prosiebensat1.py extractor does not support Austrian ccTLD (.at) URLs

[z1atk0]

All supported URLs of the prosiebensat1.py extractor also have an Austrian ccTLD variant, ie. if you call the (German ccTLD) URL http://www.prosieben.de from Austria, you get redirected to http://www.prosieben.at. Same goes for http://www.sat1.de -> http://www.sat1.at, http://www.sixx.de -> http://www.sixx.at, and so on. The extractor thinks these URLs are invalid, though, as it only knows about the German ccTLD variants.

Example:

[zlatko@disclosure]:~$ youtube-dl -F "http://www.sat1.at/tv/newtopia/videos/162-besuch-von-kathy-kelly-ganze-folge"
[generic] 162-besuch-von-kathy-kelly-ganze-folge: Requesting header
WARNING: Falling back on generic information extractor.
[generic] 162-besuch-von-kathy-kelly-ganze-folge: Downloading webpage
[generic] 162-besuch-von-kathy-kelly-ganze-folge: Extracting information
ERROR: Unsupported URL: http://www.sat1.at/tv/newtopia/videos/162-besuch-von-kathy-kelly-ganze-folge

The enclosed trivial patch fixes this problem:

diff -pruN youtube-dl-orig/youtube_dl/extractor/prosiebensat1.py youtube-dl/youtube_dl/extractor/prosiebensat1.py
--- youtube-dl-orig/youtube_dl/extractor/prosiebensat1.py   2015-04-26 22:44:31.000000000 +0200
+++ youtube-dl/youtube_dl/extractor/prosiebensat1.py    2015-05-23 06:32:42.000000000 +0200
@@ -17,7 +17,7 @@ from ..utils import (
 class ProSiebenSat1IE(InfoExtractor):
     IE_NAME = 'prosiebensat1'
     IE_DESC = 'ProSiebenSat.1 Digital'
-    _VALID_URL = r'https?://(?:www\.)?(?:(?:prosieben|prosiebenmaxx|sixx|sat1|kabeleins|ran|the-voice-of-germany)\.de|fem\.com)/(?P<id>.+)'
+    _VALID_URL = r'https?://(?:www\.)?(?:(?:prosieben|prosiebenmaxx|sixx|sat1|kabeleins|ran|the-voice-of-germany)\.(?:de|at)|fem\.com)/(?P<id>.+)'

     _TESTS = [
         {

Result:

[zlatko@disclosure]:~$ youtube-dl-prosieben -F "http://www.sat1.at/tv/newtopia/videos/162-besuch-von-kathy-kelly-ganze-folge"
[prosiebensat1] tv/newtopia/videos/162-besuch-von-kathy-kelly-ganze-folge: Downloading webpage
[prosiebensat1] 3820852: Downloading videos JSON
[prosiebensat1] 3820852: Downloading sources JSON
[prosiebensat1] 3820852: Downloading urls JSON
[info] Available formats for 3820852:
format code     extension  resolution note
akamai_840000   mp4        unknown     840k
akamai_1200000  mp4        unknown    1200k
akamai_1600000  mp4        unknown    1600k (best)