Merge branch 'ma/worktree-cleanups'

Code clean-up.

* ma/worktree-cleanups:
  worktree: use skip_prefix to parse target
  worktree: rename copy-pasted variable
  worktree: update renamed variable in comment
  worktree: inline `worktree_ref()` into its only caller
  wt-status: introduce wt_status_state_free_buffers()
  wt-status: print to s->fp, not stdout
  wt-status: replace sha1 mentions with oid

worktree.h

@@ -159,11 +159,4 @@ void strbuf_worktree_ref(const struct worktree *wt,
 			 struct strbuf *sb,
 			 const char *refname);
 
-/*
- * Return a refname suitable for access from the current ref
- * store. The result will be destroyed at the next call.
- */
-const char *worktree_ref(const struct worktree *wt,
-			 const char *refname);
-
 #endif