fixup! Specify return value where name return value is used

Author: stefanhaller

pkg/commands/oscommands/copy.go

@@ -35,7 +35,7 @@ import (
 // destination file exists, all it's contents will be replaced by the contents
 // of the source file. The file mode will be copied from the source and
 // the copied data is synced/flushed to stable storage.
-func CopyFile(src, dst string) (err error) {
+func CopyFile(src, dst string) error {
 	in, err := os.Open(src)
 	if err != nil {
 		return err
@@ -77,7 +77,7 @@ func CopyFile(src, dst string) (err error) {
 // CopyDir recursively copies a directory tree, attempting to preserve permissions.
 // Source directory must exist. If destination already exists we'll clobber it.
 // Symlinks are ignored and skipped.
-func CopyDir(src string, dst string) (err error) {
+func CopyDir(src string, dst string) error {
 	src = filepath.Clean(src)
 	dst = filepath.Clean(dst)