Fix bp_group_has_members() test

git-svn-id: https://buddypress.svn.wordpress.org/trunk@7185 cdf35c40-ae34-48e0-9cc9-0c9da1808c22
In test_bp_has_members_friendship_requests(), make sure current user is the owner of the profile page being visited

THis prevents unauthorized redirects, which throw PHP errors in PHPUnit along
the lines of "headers already sent".

git-svn-id: https://buddypress.svn.wordpress.org/trunk@7186 cdf35c40-ae34-48e0-9cc9-0c9da1808c22