[hurd] Fix accessing f_type field of statvfs (#71851)

f4719c4 ("Add support for GNU Hurd in Path.inc and other places")
made llvm use an internal __f_type name for the f_type field (which it
is not supposed to since accessing double-underscore names is explicitly
not supported by standards). In glibc 2.39 this field was renamed to
f_type so application can now access the field as the standard says.

Author: sthibaul

llvm/lib/Support/Unix/Path.inc

@@ -487,7 +487,7 @@ static bool is_local_impl(struct STATVFS &Vfs) {
 #ifndef CIFS_MAGIC_NUMBER
 #define CIFS_MAGIC_NUMBER 0xFF534D42
 #endif
-#ifdef __GNU__
+#if defined(__GNU__) && ((__GLIBC__ < 2) || ((__GLIBC__ == 2) && (__GLIBC_MINOR__ < 39)))
   switch ((uint32_t)Vfs.__f_type) {
 #else
   switch ((uint32_t)Vfs.f_type) {