builtin/array: make push_many private

vlib/builtin/array.v

@@ -594,7 +594,7 @@ fn (mut a array) push(val voidptr) {
 // push_many implements the functionality for pushing another array.
 // `val` is array.data and user facing usage is `a << [1,2,3]`
 [unsafe]
-pub fn (mut a3 array) push_many(val voidptr, size int) {
+fn (mut a3 array) push_many(val voidptr, size int) {
 	a3.ensure_cap(a3.len + size)
 	if a3.data == val && !isnil(a3.data) {
 		// handle `arr << arr`

vlib/term/ui/ui.v

@@ -28,7 +28,8 @@ pub fn (mut ctx Context) write(s string) {
 	if s == '' {
 		return
 	}
-	unsafe { ctx.print_buf.push_many(s.str, s.len) }
+	tmp := unsafe { s.str.vbytes(s.len) }
+	ctx.print_buf << tmp
 }
 
 // flush displays the accumulated print buffer to the screen.