Change a variable name in Commit#cherry_pick_description

app/models/commit.rb

@@ -252,21 +252,21 @@ class Commit
   end
   def cherry_pick_description(user)
-    message_buffer = "(cherry picked from commit #{sha})"
+    message_body = "(cherry picked from commit #{sha})"
     if merged_merge_request?(user)
       commits_in_merge_request = merged_merge_request(user).commits
       if commits_in_merge_request.present?
-        message_buffer << "\n"
+        message_body << "\n"
         commits_in_merge_request.reverse.each do |commit_in_merge|
-          message_buffer << "\n#{commit_in_merge.short_id} #{commit_in_merge.title}"
+          message_body << "\n#{commit_in_merge.short_id} #{commit_in_merge.title}"
         end
       end
     end
-    message_buffer
+    message_body
   end
   def cherry_pick_message(user)