Keep space between empty textarea when we click on soiurce

Hi All,

Actually I need to add space between when empty textarea is added in Source mode then toggle to Ui by click on the source button

Steps :

I am Using ckeditor 3.6.2 version.

1.open ck editor and click on Source link

2.Enter empty textarea tag like <textarea/>

3.Again  click on Source button then ckeditor will add the correct syntax like

"<textarea></textarea>"

BUt what i need to do is  add space between those empty textarea like "<textarea> </textarea>"

so can any one help me. like where can i change the code