use 2 spaces for indentation in sanitize.js
use 2 spaces for indentation in sanitize.js

See r2469 and https://groups.google.com/d/topic/svg-edit/fKGQEZ6h7-g/

muhadbk0/svg-edit,muhadbk0/svg-edit,likaiguo/svg-edit,muhadbk0/svg-edit,kimoa/svg-edit,fflying/svg-edit,4xx/svg-edit,likaiguo/svg-edit,likaiguo/svg-edit,bogdanmanate/svg-edit,4xx/svg-edit,DevHack/svg-edit,DevHack/svg-edit,DevHack/svg-edit,bogdanmanate/svg-edit,rebootcode/svg-edit,bogdanmanate/svg-edit,kimoa/svg-edit,rebootcode/svg-edit,kimoa/svg-edit,likaiguo/svg-edit,muhadbk0/svg-edit,fflying/svg-edit,kimoa/svg-edit,bogdanmanate/svg-edit,rebootcode/svg-edit,portablejim/svg-edit,hackintos/svg-edit,portablejim/svg-edit,rebootcode/svg-edit,4xx/svg-edit,DevHack/svg-edit,portablejim/svg-edit,portablejim/svg-edit,fflying/svg-edit,hackintos/svg-edit,hackintos/svg-edit,4xx/svg-edit,hackintos/svg-edit,fflying/svg-edit