libvulkan: add NULL check to DestroySwapchainKHR

vkDestroySwapchainKHR is required to silently ignore NULL handles
that are provided to it to destroy.
This adds an early return if swapchain_handle is NULL.

Test: dEQP-VK.wsi.android.swapchain.destroy.null_handle (VK 1.0.2 CTS)

Change-Id: Ic230f114a680210cb0e0de931b17e4d70fb27f44
(cherry picked from commit d78c2e8a0807ff45db4cb643cc2ef38eafd22551)

1 files changed, 2 insertions, 0 deletions

diff --git a/vulkan/libvulkan/swapchain.cpp b/vulkan/libvulkan/swapchain.cpp
index adc7d5cf1c..03d37fa895 100644
--- a/vulkan/libvulkan/swapchain.cpp
+++ b/vulkan/libvulkan/swapchain.cpp
@@ -719,6 +719,8 @@ void DestroySwapchainKHR(VkDevice device,
                          const VkAllocationCallbacks* allocator) {
     const auto& dispatch = GetData(device).driver;
     Swapchain* swapchain = SwapchainFromHandle(swapchain_handle);
+    if (!swapchain)
+        return;
     bool active = swapchain->surface.swapchain_handle == swapchain_handle;
     ANativeWindow* window = active ? swapchain->surface.window.get() : nullptr;