examples: fix compilation with -prod

vlib/term/ui/input_nix.c.v

@@ -3,7 +3,6 @@
 // that can be found in the LICENSE file.
 module ui
 
-
 struct ExtraContext {
 mut:
 	read_buf []byte
@@ -15,29 +14,29 @@ const (
 
 pub fn init(cfg Config) &Context {
 	mut ctx := &Context{
-		cfg: cfg,
+		cfg: cfg
 	}
-	ctx.read_buf = []byte{ cap: cfg.buffer_size }
+	ctx.read_buf = []byte{cap: cfg.buffer_size}
 
 	// lmao
 	unsafe {
-		x := &ctx_ptr
+		x := &ui.ctx_ptr
 		*x = ctx
+		_ = x
 	}
-
 	return ctx
 }
 
 [inline]
 fn save_title() {
-    // restore the previously saved terminal title
-    print('\x1b[22;0t')
+	// restore the previously saved terminal title
+	print('\x1b[22;0t')
 }
 
 [inline]
 fn load_title() {
-    // restore the previously saved terminal title
-    print('\x1b[23;0t')
+	// restore the previously saved terminal title
+	print('\x1b[23;0t')
 }
 
 pub fn (mut ctx Context) run() ? {
@@ -45,17 +44,17 @@ pub fn (mut ctx Context) run() ? {
 		ctx.fail('error: x11 backend not implemented yet')
 		exit(1)
 	} else {
-		ctx.termios_setup()?
+		ctx.termios_setup() ?
 		ctx.termios_loop()
 	}
 }
 
-[inline]
 // shifts the array left, to remove any data that was just read, and updates its len
 // TODO: remove
+[inline]
 fn (mut ctx Context) shift(len int) {
 	unsafe {
-		C.memmove(ctx.read_buf.data, byteptr(ctx.read_buf.data) + len, ctx.read_buf.cap - len)
+		C.memmove(ctx.read_buf.data, &byte(ctx.read_buf.data) + len, ctx.read_buf.cap - len)
 		ctx.resize_arr(ctx.read_buf.len - len)
 	}
 }
@@ -64,5 +63,8 @@ fn (mut ctx Context) shift(len int) {
 [inline]
 fn (mut ctx Context) resize_arr(size int) {
 	mut l := &ctx.read_buf.len
-	unsafe { *l = size }
+	unsafe {
+		*l = size
+		_ = l
+	}
 }