kovidgoyal@5e645a7 fixes the password file creation, allowing it to be unlinked, but read_data_from_shared_memory/1 rejects the shared object if it is not read only, and will break the ssh kitten for all platforms. This change removes the read only check, relying only on the file ownership check. This fully fixes #5928 Signed-off-by: Loren Schlomer <me@schlomie.com>