catchup (DELTA|PTRACK) data corruption

[kulaginm]

When using pg_probackup catchup with the following preconditions:
1.in DELTA or PTRACK modes
2.in ssh mode and if --source-pgdata and --destination-pgdata match

The source database is corrupted (at least the global/pg_control, global/pg_filenode.map and base/*/pg_filenode.map files are deleted)

At the end of the command, a message like this appears:
ERROR: Could not open file "/pgwal/test/global/pg_control" for reading: No such file or directory

Thanks to Vadim Ponomarev ("Скала-Р") for pointing out this error.