merging pick_link() with get_link(), part 4

Move the call of get_link() into walk_component().  Change the
calling conventions for walk_component() to returning the link
body to follow (if any).

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2020-01-14 13:24:17 -05:00
commit 92d270165c