cp: Set exit status to 1 for any error (#2127)
cp: Set exit status to 1 for any error (#2127)

Non fatal errors during copy were not setting mc exit code with 1. This
commit fixes the behavior.
krisis/mc,vadmeste/mc,CarterMcClellan/mc,CarterMcClellan/mc,krisis/mc,abperiasamy/mc,balamurugana/mc,minio/mc,abperiasamy/mc,vadmeste/mc,balamurugana/mc,minio/mc