FIX: follow redirects for inline/mini onebox (#13512)

lib/retrieve_title.rb

@@ -57,24 +57,26 @@ module RetrieveTitle
     encoding = nil
 
     fd.get do |_response, chunk, uri|
+      unless Net::HTTPRedirection === _response
+        if current
+          current << chunk
+        else
+          current = chunk
+        end
 
-      if current
-        current << chunk
-      else
-        current = chunk
-      end
-      if !encoding && content_type = _response['content-type']&.strip&.downcase
-        if content_type =~ /charset="?([a-z0-9_-]+)"?/
-          encoding = Regexp.last_match(1)
-          if !Encoding.list.map(&:name).map(&:downcase).include?(encoding)
-            encoding = nil
+        if !encoding && content_type = _response['content-type']&.strip&.downcase
+          if content_type =~ /charset="?([a-z0-9_-]+)"?/
+            encoding = Regexp.last_match(1)
+            if !Encoding.list.map(&:name).map(&:downcase).include?(encoding)
+              encoding = nil
+            end
           end
         end
-      end
 
-      max_size = max_chunk_size(uri) * 1024
-      title = extract_title(current, encoding)
-      throw :done if title || max_size < current.length
+        max_size = max_chunk_size(uri) * 1024
+        title = extract_title(current, encoding)
+        throw :done if title || max_size < current.length
+      end
     end
     title
   end