admin member search fails if return(enter) is used

Hi, 

When using the admin member search, after entering a value in the search field and hitting enter/return on your keyboard, the page returns nothing and you have to navigate back to the members page to search again. This annoyed me to death with 7.0.9 and hoped it would be fixed. Please do.

Thanks

http://www.boonex.com/trac/dolphin/ticket/3044

Thanks!