From: Alberto <zanovello2002@gmail.com>

---
 src/main.zig | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/src/main.zig b/src/main.zig
index af54641..48dc103 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -440,14 +440,16 @@ fn xdg_surface_listener(xdg_surface: *xdg.Surface, event: xdg.Surface.Event, wl_
 }
 
 fn xdg_surface_event(xdg_surface: *xdg.Surface, event: xdg.Surface.Event, wl_surface: *wl.Surface) !void {
+    const state = struct {
+        var last_width: i32 = -1;
+        var last_height: i32 = -1;
+    };
+
     switch (event) {
         .configure => |ev| {
             xdg_surface.ackConfigure(ev.serial);
 
-            var last_width: i32 = -1;
-            var last_height: i32 = -1;
-
-            if (last_width == surface_width and last_height == surface_height) {
+            if (state.last_width == surface_width and state.last_height == surface_height) {
                 wl_surface.commit();
                 return;
             }
@@ -455,8 +457,8 @@ fn xdg_surface_event(xdg_surface: *xdg.Surface, event: xdg.Surface.Event, wl_sur
             const w = if (surface_width == 0) 100 else surface_width;
             const h = if (surface_height == 0) 100 else surface_height;
 
-            last_width = w;
-            last_height = h;
+            state.last_width = w;
+            state.last_height = h;
 
             const buffer = try ctx.gpa.create(Buffer);
             try buffer.init(ctx.shm.?, w, h, 0xdeadbeef);
-- 
2.38.5

Thanks for the patch, it would have been an improvement but I removed
this part sometime ago and apparently forgot to push it.
I think it is not really needed as the wayland part of this example
is not the main point.