DEV: Apply Rubocop redundant return style

script/import_scripts/discuz_x.rb

@@ -882,7 +882,7 @@ class ImportScripts::DiscuzX < ImportScripts::Base
       return nil
     end
 
-    return upload, real_filename
+    [upload, real_filename]
   end
 
   # find the uploaded file and real name from the db
@@ -938,12 +938,12 @@ class ImportScripts::DiscuzX < ImportScripts::Base
       return nil
     end
 
-    return upload, real_filename
+    [upload, real_filename]
   rescue Mysql2::Error => e
     puts "SQL Error"
     puts e.message
     puts sql
-    return nil
+    nil
   end
 
   def first_exists(*items)