From 1e9310111faae29f356ee2166af3a8e799b919eb Mon Sep 17 00:00:00 2001
From: Josh Gargus <jjosh@google.com>
Date: Wed, 16 Nov 2022 03:58:39 +0000
Subject: [PATCH] [fuchsia] Fix shader warmup.

Before, ~VulkanSurface() invokes a potentially empty std::function.
Now, checks if it is empty before invoking it.
---
 shell/platform/fuchsia/flutter/vulkan_surface.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/shell/platform/fuchsia/flutter/vulkan_surface.cc b/shell/platform/fuchsia/flutter/vulkan_surface.cc
index f2a69044b1700..7ca2e68f2065f 100644
--- a/shell/platform/fuchsia/flutter/vulkan_surface.cc
+++ b/shell/platform/fuchsia/flutter/vulkan_surface.cc
@@ -184,7 +184,7 @@ VulkanSurface::~VulkanSurface() {
     if (buffer_id_) {
       session_->DeregisterBufferCollection(buffer_id_);
     }
-  } else {
+  } else if (release_image_callback_) {
     release_image_callback_();
   }
   wait_.Cancel();