Fix a bug in completion--flex-adjust-metadata

If minibuffer-default coincided with the first of completions, the
empty list would be returned.

* lisp/minibuffer.el (completion--flex-adjust-metadata): Make sure
to never return empty list.

1 files changed, 2 insertions, 1 deletions

diff --git a/lisp/minibuffer.el b/lisp/minibuffer.el
index 2dba26818e1..6011a493d0b 100644
--- a/lisp/minibuffer.el
+++ b/lisp/minibuffer.el
@@ -3612,7 +3612,8 @@ that is non-nil."
                for comp = (cadr l)
                when (string-prefix-p minibuffer-default comp)
                do (setf (cdr l) (cddr l))
-               and return (cons comp pre-sorted)))
+               and return (cons comp pre-sorted)
+               finally return pre-sorted))
              (t
               pre-sorted))))))
     `(metadata