In 6ba3e24853
serve nfs: fix incorrect user id and group id exported to NFS #7973
We updated the stat function to output uid and gid. However this set
the inode numbers of everything to -1. This causes a problem with
doing `ls -laR` giving "not listing already-listed directory" as it
uses inode numbers to see if it has listed a directory or not.
This patch reads the inode number from the vfs.Node and sets it in the
Stat output.