Remove blank line between if/else clause, feedback:

https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5142#note_13047184

app/models/project.rb

@@ -434,7 +434,6 @@ class Project < ActiveRecord::Base
     if ct.nil?
       builds.none
-
     else
       builds.joins(:pipeline).
         merge(Ci::Pipeline.where(sha: ct.sha)).