master c640e978874: project.el: Fix bug in project-ignores method for VC-aware backend

[Dmitry Gutov]

branch: master
commit c640e978874385f9774c2903b97677406bee97a2
Author: Damien Cassou <damien@cassou.me>
Commit: Dmitry Gutov <dmitry@gutov.dev>

    project.el: Fix bug in project-ignores method for VC-aware backend
    
    The variable `backend' was always nil preventing the 25-line long
    `when' block from doing anything.  This bug was introduced in commit
    785fa801596ad7bb9f838cac865f00de29e253d1 "New user option:
    project-vc-extra-root-markers". (Bug#65704)
    
    * lisp/progmodes/project.el (project-ignores): Make sure the variable
    is initialized, so that backend-specific code is used if any.
---
 lisp/progmodes/project.el | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/lisp/progmodes/project.el b/lisp/progmodes/project.el
index 37db677943a..29a81c7e151 100644
--- a/lisp/progmodes/project.el
+++ b/lisp/progmodes/project.el
@@ -733,11 +733,10 @@ See `project-vc-extra-root-markers' for the marker value 
format.")
 
 (cl-defmethod project-ignores ((project (head vc)) dir)
   (let* ((root (nth 2 project))
-         backend)
+         (backend (cadr project)))
     (append
      (when (and backend
                 (file-equal-p dir root))
-       (setq backend (cadr project))
        (delq
         nil
         (mapcar