fixed https reg exp for flicker

[sammyrulez]

flicker now expose shortened url with https and the regexp of the provider do not match

[coleifer]

I did a quick experiment by combining:

• http versus https flickr oembed endpoint
• http versus https versions of flickr photo urls

In every case flickr returned https data:

{
  "provider_url": "https://www.flickr.com/", 
  "cache_age": 3600, 
  "version": "1.0", 
  "license": "All Rights Reserved", 
  "title": "Kubricks", 
  "url": "https://farm6.staticflickr.com/5575/14848501055_0527527a17_b.jpg", 
  "author_name": "James_Burden", 
  "height": "683", 
  "thumbnail_width": 75, 
  "width": "1024", 
  "thumbnail_url": "https://farm6.staticflickr.com/5575/14848501055_0527527a17_s.jpg", 
  "author_url": "https://www.flickr.com/photos/macthemesdj/", 
  "web_page": "https://www.flickr.com/photos/macthemesdj/14848501055/", 
  "license_id": 0, 
  "thumbnail_height": 75, 
  "web_page_short_url": "https://flic.kr/p/oC7s3T", 
  "type": "photo", 
  "provider_name": "Flickr"
}

So I think it's safe to just make the endpoint reference https and make the regex permissive.

[coleifer]

Fixed in 73614fae15ce10013d2541f21e72bb1d77425613