Fix inconsistent spacing

lib/paperclip/attachment.rb

@@ -476,10 +476,10 @@ module Paperclip
 
     # called by storage after the writes are flushed and before @queued_for_writes is cleared
     def after_flush_writes
-       @queued_for_write.each do |style, file|
-         file.close unless file.closed?
-         file.unlink if file.respond_to?(:unlink) && file.path.present? && File.exist?(file.path)
-       end
+      @queued_for_write.each do |style, file|
+        file.close unless file.closed?
+        file.unlink if file.respond_to?(:unlink) && file.path.present? && File.exist?(file.path)
+      end
     end
 
     # You can either specifiy :restricted_characters or you can define your own