Fix type of bitrot mismatch error (#6205)
Fix type of bitrot mismatch error (#6205)

The error type `hashMismatchError` is lost when the error is received
from a remote disk.

Fixes #6201
NitishT/minio,aead/minio,harshavardhana/minio,harshavardhana/minio,balamurugana/minio,vadmeste/minio,aead/minio,krisis/minio,fwessels/minio,fwessels/minio,harshavardhana/minio,NitishT/minio,harshavardhana/minio,donatello/minio,jimjag/minio,aead/minio,krishnasrinivas/minio,harshavardhana/minio,jimjag/minio,minio/minio,krishnasrinivas/minio,minio/minio,donatello/minio,krisis/minio,harshavardhana/minio,fwessels/minio,aead/minio,aead/minio,jimjag/minio,harshavardhana/minio,fwessels/minio,aead/minio,krishnasrinivas/minio,aead/minio,harshavardhana/minio,balamurugana/minio,NitishT/minio,NitishT/minio,aead/minio,jimjag/minio,krishnasrinivas/minio,vadmeste/minio