Use iterator for pool sizes

vulkan-rs/src/descriptorsetlayout.rs

@@ -72,14 +72,14 @@ impl DescriptorSetLayoutBuilder {
 
         let descriptor_set_layout = device.create_descriptor_set_layout(&descriptor_set_ci)?;
 
-        let mut pool_sizes = Vec::new();
-
-        for layout_binding in &self.layout_bindings {
-            pool_sizes.push(VkDescriptorPoolSize {
+        let pool_sizes = self
+            .layout_bindings
+            .into_iter()
+            .map(|layout_binding| VkDescriptorPoolSize {
                 ty: layout_binding.descriptorType,
                 descriptorCount: layout_binding.descriptorCount,
-            });
-        }
+            })
+            .collect();
 
         Ok(Arc::new(DescriptorSetLayout {
             device,