Avoid trailing 'charset=' garbage

app/controllers/projects/avatars_controller.rb

@@ -8,7 +8,8 @@ class Projects::AvatarsController < Projects::ApplicationController
       headers['X-Content-Type-Options'] = 'nosniff'
       headers.store(*Gitlab::Workhorse.send_git_blob(repository, @blob))
       headers['Content-Disposition'] = 'inline'
-      render nothing: true, content_type: @blob.content_type
+      headers['Content-Type'] = @blob.content_type
+      head :ok # 'render nothing: true' messes up the Content-Type
     else
       render_404
     end

app/controllers/projects/raw_controller.rb

@@ -17,7 +17,8 @@ class Projects::RawController < Projects::ApplicationController
       else
         headers.store(*Gitlab::Workhorse.send_git_blob(@repository, @blob))
         headers['Content-Disposition'] = 'inline'
-        render nothing: true, content_type: get_blob_type
+        headers['Content-Type'] = get_blob_type
+        head :ok # 'render nothing: true' messes up the Content-Type
       end
     else
       render_404