Bartosz Kosiorek : msvcrt: Fix _mbslwr_s_l implementation.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 2b7dcfb44d6bd889ff1cc362efa0f6226dd54649
URL:    https://gitlab.winehq.org/wine/wine/-/commit/2b7dcfb44d6bd889ff1cc362efa0f62...

Author: Bartosz Kosiorek <gang65(a)poczta.onet.pl>
Date:   Thu Nov  2 18:35:22 2023 +0100

msvcrt: Fix _mbslwr_s_l implementation.

---

 dlls/msvcrt/mbcs.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/dlls/msvcrt/mbcs.c b/dlls/msvcrt/mbcs.c
index abb5f574ba1..8cf7b3f8ec3 100644
--- a/dlls/msvcrt/mbcs.c
+++ b/dlls/msvcrt/mbcs.c
@@ -2386,13 +2386,19 @@ unsigned char* CDECL _mbslwr(unsigned char *s)
 int CDECL _mbslwr_s_l(unsigned char* s, size_t len, _locale_t locale)
 {
   unsigned char *p = s;
+  pthreadmbcinfo mbcinfo;
 
   if (!s && !len)
     return 0;
   if (!MSVCRT_CHECK_PMT(s && len))
     return EINVAL;
 
-  if (get_mbcinfo()->ismbcodepage)
+  if (locale)
+    mbcinfo = locale->mbcinfo;
+  else
+    mbcinfo = get_mbcinfo();
+
+  if (mbcinfo->ismbcodepage)
   {
     unsigned int c;
     for ( ; *s && len > 0; len--)