Bartosz Kosiorek : msvcrt: Fix _mbsspn_l implementation.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: c94671324ea2a3c9185da0850a2be213d13fdcfb
URL:    https://gitlab.winehq.org/wine/wine/-/commit/c94671324ea2a3c9185da0850a2be21...

Author: Bartosz Kosiorek <gang65(a)poczta.onet.pl>
Date:   Sat Nov 11 23:23:44 2023 +0100

msvcrt: Fix _mbsspn_l implementation.

---

 dlls/msvcrt/mbcs.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/dlls/msvcrt/mbcs.c b/dlls/msvcrt/mbcs.c
index 385274a44a4..1a595a44ced 100644
--- a/dlls/msvcrt/mbcs.c
+++ b/dlls/msvcrt/mbcs.c
@@ -2791,6 +2791,9 @@ size_t CDECL _mbsspn_l(const unsigned char* string,
 {
     const unsigned char *p, *q;
 
+    if (!MSVCRT_CHECK_PMT(string && set))
+        return 0;
+
     for (p = string; *p; p++)
     {
         for (q = set; *q; q++)