[Multiple issue assignees] Fix issue atom feed

app/views/issues/_issue.atom.builder

@@ -26,9 +26,16 @@ xml.entry do
   if issue.assignees.any?
     xml.assignees do
       issue.assignees.each do |assignee|
+        xml.assignee do
           xml.name assignee.name
           xml.email assignee.public_email
         end
       end
     end
+
+    xml.assignee do
+      xml.name issue.assignees.first.name
+      xml.email issue.assignees.first.public_email
+    end
+  end
 end

spec/features/atom/issues_spec.rb

@@ -22,7 +22,8 @@ describe 'Issues Feed', feature: true  do
           to have_content('application/atom+xml')
         expect(body).to have_selector('title', text: "#{project.name} issues")
         expect(body).to have_selector('author email', text: issue.author_public_email)
-        expect(body).to have_selector('assignees email', text: issue.author_public_email)
+        expect(body).to have_selector('assignees assignee email', text: issue.assignees.first.public_email)
+        expect(body).to have_selector('assignee email', text: issue.assignees.first.public_email)
         expect(body).to have_selector('entry summary', text: issue.title)
       end
     end
@@ -36,7 +37,8 @@ describe 'Issues Feed', feature: true  do
           to have_content('application/atom+xml')
         expect(body).to have_selector('title', text: "#{project.name} issues")
         expect(body).to have_selector('author email', text: issue.author_public_email)
-        expect(body).to have_selector('assignees email', text: issue.author_public_email)
+        expect(body).to have_selector('assignees assignee email', text: issue.assignees.first.public_email)
+        expect(body).to have_selector('assignee email', text: issue.assignees.first.public_email)
         expect(body).to have_selector('entry summary', text: issue.title)
       end
     end