b2: return error in Hash from readFileMetadata operation
b2: return error in Hash from readFileMetadata operation

jackschmidt/rclone,arcimboldo/rclone,arcimboldo/rclone,greendayo7/rclone,seuffert/rclone,olihey/rclone,kynikos/rclone,seuffert/rclone,kynikos/rclone,B4dM4n/rclone,greendayo7/rclone,B4dM4n/rclone,ncw/rclone,ncw/rclone,jackschmidt/rclone,yonjah/rclone,jackschmidt/rclone,yonjah/rclone,ncw/rclone,kynikos/rclone,B4dM4n/rclone,olihey/rclone,jackschmidt/rclone,seuffert/rclone,greendayo7/rclone,ncw/rclone,arcimboldo/rclone,arcimboldo/rclone,yonjah/rclone,greendayo7/rclone,seuffert/rclone,B4dM4n/rclone,kynikos/rclone,yonjah/rclone,olihey/rclone,olihey/rclone