From fe6f3ab33a366298e6a3faa6e71dc16588cf760b Mon Sep 17 00:00:00 2001
From: Jason Simmons <jason-simmons@users.noreply.github.com>
Date: Thu, 9 Nov 2017 10:04:41 -0800
Subject: [PATCH] In GetTexture, do not insert missing IDs into the texture
 registry map (#4339)

Fixes https://github.com/flutter/flutter/issues/12924
---
 flow/texture.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/flow/texture.cc b/flow/texture.cc
index 57e8ce1c6..33a48af98 100644
--- a/flow/texture.cc
+++ b/flow/texture.cc
@@ -36,7 +36,8 @@ void TextureRegistry::OnGrContextDestroyed() {
 
 std::shared_ptr<Texture> TextureRegistry::GetTexture(int64_t id) {
   ASSERT_IS_GPU_THREAD
-  return mapping_[id];
+  auto it = mapping_.find(id);
+  return it != mapping_.end() ? it->second : nullptr;
 }
 
 Texture::Texture(int64_t id) : id_(id) {}
-- 
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