build: remove x := x made unnecessary by the new semantics of loops in go1.22

Signed-off-by: russcoss <russcoss@outlook.com>

fs/sync/rc.go

@@ -8,7 +8,6 @@ import (
 
 func init() {
 	for _, name := range []string{"sync", "copy", "move"} {
-		name := name
 		moveHelp := ""
 		if name == "move" {
 			moveHelp = "- deleteEmptySrcDirs - delete empty src directories if set\n"