SAK-28163

Fix user prefeences resizeFrame process so that when there is no frame 
it does not fail.   Convienently when there is no frame - there is absolutely
no need to resize said non-existent frame.  Hence this modification is pretty
simple :)



git-svn-id: https://source.sakaiproject.org/svn/user/trunk@315934 66ffb92e-73f9-0310-93c1-f5514f145a0a