ntdll: Export strnlen.

dlls/ntdll/ntdll.spec

@@ -1431,6 +1431,7 @@
 @ cdecl -private strncat(str str long) NTDLL_strncat
 @ cdecl -private strncmp(str str long) NTDLL_strncmp
 @ cdecl -private strncpy(ptr str long) NTDLL_strncpy
+@ cdecl -private strnlen(ptr long) NTDLL_strnlen
 @ cdecl -private strpbrk(str str) NTDLL_strpbrk
 @ cdecl -private strrchr(str long) NTDLL_strrchr
 @ cdecl -private strspn(str str) NTDLL_strspn

dlls/ntdll/string.c

@@ -164,6 +164,15 @@ char * __cdecl NTDLL_strncpy( char *dst, const char *src, size_t len )
 
 
 /*********************************************************************
+ *                  strnlen   (NTDLL.@)
+ */
+size_t __cdecl NTDLL_strnlen( const char *str, size_t len )
+{
+    return strnlen( str, len );
+}
+
+
+/*********************************************************************
  *                  strpbrk   (NTDLL.@)
  */
 char * __cdecl NTDLL_strpbrk( const char *str, const char *accept )