Merge branch 'es_minor_fix' into 'master'

[ES] Minor fix



See merge request !255

lib/elastic/indexer.rb

@@ -23,7 +23,7 @@ module Elastic
 
       output, status = Gitlab::Popen.popen(command, nil, vars)
 
-      raise Error, output.join("\n") unless status.zero?
+      raise Error, output unless status.zero?
 
       true
     end