[FreshRSS] Better error message for inaccessible feeds
[FreshRSS] Better error message for inaccessible feeds

An inaccessible feed can be due to several problems. For identifying the
problem, it is an important information to provide the HTTP status code
and the HTTP content type of the server response, which SimplePie did
not do.

https://github.com/FreshRSS/FreshRSS/commit/56ac35095a6923661453916c472e117643cdea84
https://github.com/FreshRSS/FreshRSS/issues/456

FreshRSS/simplepie,simplepie/simplepie,skyzyx/simplepie,mblaney/simplepie,simplepie/simplepie,Alkarex/simplepie,Alkarex/simplepie,Alkarex/simplepie,mblaney/simplepie,FreshRSS/simplepie,skyzyx/simplepie