From e44f1a1446f8e72573e5a1026807e71a0495f88d Mon Sep 17 00:00:00 2001
From: Viktor Szakats <commit@vsz.me>
Date: Thu, 18 Jun 2026 20:04:51 +0200
Subject: [PATCH] smb: constify `strchr()` result variable

Fixing (as seen with gcc-15 on Ubuntu 26.04):
```
lib/smb.c: In function 'smb_connect':
lib/smb.c:491:9: error: assignment discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
  491 |   slash = strchr(user, '/');
      |         ^
lib/smb.c:493:11: error: assignment discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
  493 |     slash = strchr(user, '\\');
      |           ^
```
Ref: https://github.com/curl/curl/actions/runs/27778098314/job/82195462418?pr=22092

Follow-up to 4e5908306ad5febee88f7eae8ea3b0c41a6b7d84 #20428
Follow-up to 7dc60bdb90c710c2e36b2d05aa3686ff491a9bbe #20425
Follow-up to 0e2507a3c65376d6bda860ff20bd94ada9bbb9fd #20421

Cherry-picked from #22092

Closes #22094
---
 lib/smb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/smb.c b/lib/smb.c
index c06ca14fb3..70af8d5970 100644
--- a/lib/smb.c
+++ b/lib/smb.c
@@ -467,7 +467,7 @@ static CURLcode smb_connect(struct Curl_easy *data, bool *done)
 {
   struct connectdata *conn = data->conn;
   struct smb_conn *smbc = Curl_conn_meta_get(conn, CURL_META_SMB_CONN);
-  char *slash;
+  const char *slash;
   const char *user = Curl_creds_user(conn->creds);
 
   (void)done;