fix: destructor should not change pointer to undefined

src/layout.zig

@@ -52,7 +52,6 @@ pub fn Layout(comptime Event: type, comptime Renderer: type) type {
 
         pub fn deinit(this: *LayoutType) void {
             this.vtable.deinit(this);
-            this.* = undefined;
         }
 
         pub fn createFrom(object: anytype) LayoutType {

src/layout/Framing.zig

@@ -70,7 +70,6 @@ pub fn Layout(comptime Event: type, comptime Element: type, comptime Renderer: t
                 },
             }
             this.allocator.destroy(this);
-            this.* = undefined;
         }
 
         pub fn handle(this: *@This(), event: Event) !*Events {

src/layout/HContainer.zig

@@ -109,7 +109,6 @@ pub fn Layout(comptime Event: type, comptime Element: type, comptime Renderer: t
             }
             this.containers.deinit();
             this.allocator.destroy(this);
-            this.* = undefined;
         }
 
         pub fn handle(this: *@This(), event: Event) !*Events {

src/layout/HStack.zig

@@ -77,7 +77,6 @@ pub fn Layout(comptime Event: type, comptime Element: type, comptime Renderer: t
             }
             this.elements.deinit();
             this.allocator.destroy(this);
-            this.* = undefined;
         }
 
         pub fn handle(this: *@This(), event: Event) !*Events {

src/layout/Margin.zig

@@ -67,7 +67,6 @@ pub fn Layout(comptime Event: type, comptime Element: type, comptime Renderer: t
                 },
             }
             this.allocator.destroy(this);
-            this.* = undefined;
         }
 
         pub fn handle(this: *@This(), event: Event) !*Events {

src/layout/Padding.zig

@@ -61,7 +61,6 @@ pub fn Layout(comptime Event: type, comptime Element: type, comptime Renderer: t
                 },
             }
             this.allocator.destroy(this);
-            this.* = undefined;
         }
 
         pub fn handle(this: *@This(), event: Event) !*Events {

src/layout/VContainer.zig

@@ -109,7 +109,6 @@ pub fn Layout(comptime Event: type, comptime Element: type, comptime Renderer: t
             }
             this.containers.deinit();
             this.allocator.destroy(this);
-            this.* = undefined;
         }
 
         pub fn handle(this: *@This(), event: Event) !*Events {

src/layout/VStack.zig

@@ -77,7 +77,6 @@ pub fn Layout(comptime Event: type, comptime Element: type, comptime Renderer: t
             }
             this.elements.deinit();
             this.allocator.destroy(this);
-            this.* = undefined;
         }
 
         pub fn handle(this: *@This(), event: Event) !*Events {

src/widget.zig

@@ -58,7 +58,6 @@ pub fn Widget(comptime Event: type, comptime Renderer: type) type {
 
         pub fn deinit(this: *WidgetType) void {
             this.vtable.deinit(this);
-            this.* = undefined;
         }
 
         pub fn createFrom(object: anytype) WidgetType {

src/widget/RawText.zig

@@ -42,7 +42,6 @@ pub fn Widget(comptime Event: type, comptime Renderer: type) type {
             this.contents.deinit();
             this.line_index.deinit();
             this.allocator.destroy(this);
-            this.* = undefined;
         }
 
         pub fn handle(this: *@This(), event: Event) ?Event {

src/widget/Spacer.zig

@@ -23,7 +23,6 @@ pub fn Widget(comptime Event: type, comptime Renderer: type) type {
 
         pub fn deinit(this: *@This()) void {
             this.allocator.destroy(this);
-            this.* = undefined;
         }
 
         pub fn handle(this: *@This(), event: Event) ?Event {

src/widget/Text.zig

@@ -37,7 +37,6 @@ pub fn Widget(comptime Event: type, comptime Renderer: type) type {
 
         pub fn deinit(this: *@This()) void {
             this.allocator.destroy(this);
-            this.* = undefined;
         }
 
         pub fn handle(this: *@This(), event: Event) ?Event {