Profile Visibility Settings:

When a user is on their "Settings > Profile" screen, on form
submission, the page tries to redirect to the `privacy` slug, which
does not exist. (See r7960.)

This commit addresses this by using the correct slug - `profile` -
for the redirect.

See #5352

git-svn-id: https://buddypress.svn.wordpress.org/trunk@8258 cdf35c40-ae34-48e0-9cc9-0c9da1808c22