From fd5e7f62538d727653a50178dbd578bb33ac0ab6 Mon Sep 17 00:00:00 2001
From: daimiao chen <daniel-daimiao-chen@outlook.com>
Date: Thu, 5 Mar 2026 16:56:03 -0500
Subject: [PATCH] Using LFS_ASSERT instead of an runtime check.

Remove NULL check from condition and assert callback is valid.
---
 lfs.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lfs.c b/lfs.c
index fce9d3bf..ecedcd8f 100644
--- a/lfs.c
+++ b/lfs.c
@@ -1290,7 +1290,8 @@ static lfs_stag_t lfs_dir_fetchmatch(lfs_t *lfs,
             }
 
             // found a match for our fetcher?
-            if ((fmask & tag) == (fmask & ftag) && (cb != NULL)) {
+            if ((fmask & tag) == (fmask & ftag)) {
+                LFS_ASSERT(cb != NULL);
                 int res = cb(data, tag, &(struct lfs_diskoff){
                         dir->pair[0], off+sizeof(tag)});
                 if (res < 0) {