[PATCH v3 1/2] msvcrt: Fix _mbsspn_l implementation.

[Bartosz Kosiorek]

From: Bartosz Kosiorek

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

diff --git a/dlls/msvcrt/mbcs.c b/dlls/msvcrt/mbcs.c
index 9b52170d4e9..6328be7cd67 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++)