Reassigned the path input argument to local variable to prevent accidental mutability to
help reduce re-assignment error by not modifying input argument to be used as local variable.
Recover accidental remove mWorkerClient = null when removing unnecessary return statement.
Merge pull request #288 from hsaputra/reassign_input_path_to_local

Reassigned path input argument to local variable when used with TachyonFS#cleanPathIOException