* fix issue #8230: volume.fsck deletion logic to respect purgeAbsent flag
This commit fixes two issues in volume.fsck:
1. Missing chunks in existing volumes are now deleted if -reallyDeleteFilerEntries is set.
2. Missing volumes are now properly handled when a -volumeId filter is specified, allowing deletion of filer entries for those volumes.
* address PR feedback for issue #8230
- Ensure volume filter is applied before reporting missing volumes
- Fix potential nil-pointer dereferences in httpDelete method
- Use proper error checking throughout httpDelete
* address second round PR feedback for issue #8230
- Use fmt.Fprintf(c.writer, ...) instead of fmt.Printf
- Add missing newline in "deleting path" log message
6a61037333