msvcrt: Don't forward strrchr to ntdll.

dlls/msvcrt/msvcrt.spec

@@ -1435,7 +1435,7 @@
 @ cdecl strncpy_s(ptr long str long)
 @ cdecl strnlen(str long) MSVCRT_strnlen
 @ cdecl strpbrk(str str) ntdll.strpbrk
-@ cdecl strrchr(str long) ntdll.strrchr
+@ cdecl strrchr(str long) MSVCRT_strrchr
 @ cdecl strspn(str str) ntdll.strspn
 @ cdecl strstr(str str) ntdll.strstr
 @ cdecl strtod(str ptr) MSVCRT_strtod

dlls/msvcrt/string.c

@@ -1650,6 +1650,14 @@ char* __cdecl MSVCRT_strchr(const char *str, int c)
 }
 
 /*********************************************************************
+ *                  strrchr (MSVCRT.@)
+ */
+char* __cdecl MSVCRT_strrchr(const char *str, int c)
+{
+    return strrchr(str, c);
+}
+
+/*********************************************************************
  *                  memchr   (MSVCRT.@)
  */
 void* __cdecl MSVCRT_memchr(const void *ptr, int c, MSVCRT_size_t n)