charon-nm: Use CALLBACK macro for callback job's cancel implementation

Casting to this specific function type doesn't work anymore if C23 is
used as the types mismatch.

diff --git a/src/charon-nm/nm/nm_backend.c b/src/charon-nm/nm/nm_backend.c
index aefd3f9568876d6a9a9956248ee35c6c1c506f49..8ee1785212e6e1dee1bd0fa4839bb4333c7d65ff 100644 (file)
--- a/src/charon-nm/nm/nm_backend.c
+++ b/src/charon-nm/nm/nm_backend.c
@@ -78,7 +78,8 @@ static job_requeue_t run(nm_backend_t *this)
 /**
  * Cancel the GLib Main Event Loop
  */
-static bool cancel(nm_backend_t *this)
+CALLBACK(cancel, bool,
+       nm_backend_t *this)
 {
        if (this->loop)
        {
@@ -152,7 +153,7 @@ static bool nm_backend_init()
 
        lib->processor->queue_job(lib->processor,
                (job_t*)callback_job_create_with_prio((callback_job_cb_t)run, this,
-                               NULL, (callback_job_cancel_t)cancel, JOB_PRIO_CRITICAL));
+                               NULL, cancel, JOB_PRIO_CRITICAL));
        return TRUE;
 }