Fix connect() retry loop.

This would succeed eventually anyway: the first time round the connect() succeeds, returns 0, and we go around the loop again; the second time the connect() fails (because we're already connected), returns -1, and we set success to true and exit the loop. But this means that the intended retry functionality is broken.

Change-Id: If631d59e23b12e9aa952cdb528160b19b9a94b1c