extmod/vfs_posix_file: Fix flush handling in msvc builds.

Flushing console output in msvc builds always fails because that
output is not buffered so don't propagate that as an error (in a
simlar way as was done in 1c04774 for macOS).

extmod/vfs_posix_file.c

@@ -156,8 +156,10 @@ STATIC mp_uint_t vfs_posix_file_ioctl(mp_obj_t o_in, mp_uint_t request, uintptr_
             // fsync(stdin/stdout/stderr) may fail with EINVAL (or ENOTSUP on macos),
             // but don't propagate that error out.  Because data is not buffered by
             // us, and stdin/out/err.flush() should just be a no-op.
-            #ifdef __APPLE__
+            #if defined(__APPLE__)
             #define VFS_POSIX_STREAM_STDIO_ERR_CATCH (err == EINVAL || err == ENOTSUP)
+            #elif defined(_MSC_VER)
+            #define VFS_POSIX_STREAM_STDIO_ERR_CATCH (err == EINVAL || err == EBADF)
             #else
             #define VFS_POSIX_STREAM_STDIO_ERR_CATCH (err == EINVAL)
             #endif