Poorna 641a56da0d
fix panic in replication queuing (#20169)
Regression from #20077

```
Jul 26 19:08:29 minio-dr-0101a minio[275423]: Error: grid handler (NSScanner) panic: runtime error: index out of range [4] with length 1 (*errors.errorString)
Jul 26 19:08:29 minio-dr-0101a minio[275423]:       33: internal/logger/logger.go:268:logger.LogIf()
Jul 26 19:08:29 minio-dr-0101a minio[275423]:       32: internal/grid/connection.go:50:grid.gridLogIf()
Jul 26 19:08:29 minio-dr-0101a minio[275423]:       31: internal/grid/muxserver.go:234:grid.(*muxServer).handleRequests.func1()
Jul 26 19:08:29 minio-dr-0101a minio[275423]:       30: cmd/bucket-replication.go:2165:cmd.(*ReplicationPool).queueReplicaTask()
Jul 26 19:08:29 minio-dr-0101a minio[275423]:       29: cmd/bucket-replication.go:3440:cmd.queueReplicationHeal()
Jul 26 19:08:29 minio-dr-0101a minio[275423]:       28: cmd/data-scanner.go:1396:cmd.(*scannerItem).healReplication()
Jul 26 19:08:29 minio-dr-0101a minio[275423]:       27: cmd/data-scanner.go:1220:cmd.(*scannerItem).applyActions()
Jul 26 19:08:29 minio-dr-0101a minio[275423]:       26: cmd/xl-storage.go:627:cmd.(*xlStorage).NSScanner.func2()
```
2024-07-26 13:48:21 -07:00
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