From acf48b5a057df0f751e61627e5a62e7e3c66eaaa Mon Sep 17 00:00:00 2001
From: Jonah Williams <jonahwilliams@google.com>
Date: Tue, 11 Jun 2024 09:48:03 -0700
Subject: [PATCH] [engine] null check texture registry in
 OnPlatformViewMarkTextureFrameAvailable. (flutter/engine#53334)

From the issue, it looks like an NPE in this closure, we're not sure what else it could be besides the weak ptr - which could be null.

Fixes https://github.com/flutter/flutter/issues/149895
---
 engine/src/flutter/shell/common/shell.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/engine/src/flutter/shell/common/shell.cc b/engine/src/flutter/shell/common/shell.cc
index 7b5d2085343..5f6076b5a7f 100644
--- a/engine/src/flutter/shell/common/shell.cc
+++ b/engine/src/flutter/shell/common/shell.cc
@@ -1186,6 +1186,9 @@ void Shell::OnPlatformViewMarkTextureFrameAvailable(int64_t texture_id) {
   // Tell the rasterizer that one of its textures has a new frame available.
   task_runners_.GetRasterTaskRunner()->PostTask(
       [rasterizer = rasterizer_->GetWeakPtr(), texture_id]() {
+        if (!rasterizer) {
+          return;
+        }
         auto registry = rasterizer->GetTextureRegistry();
 
         if (!registry) {