REFACTOR: Use early return to flatten code

app/services/merge_requests/build_service.rb

@@ -165,15 +165,14 @@ module MergeRequests
       merge_request.title ||= "Resolve \"#{issue.title}\"" if issue.is_a?(Issue)
 
       return if merge_request.title.present?
+      return if issue_iid.blank?
 
-      if issue_iid.present?
       title_parts = ["Resolve #{issue.to_reference}"]
       branch_title = source_branch.downcase.remove(issue_iid.downcase).titleize.humanize
 
       title_parts << "\"#{branch_title}\"" if branch_title.present?
       merge_request.title = title_parts.join(' ')
     end
-    end
 
     def issue_iid
       strong_memoize(:issue_iid) do