From 055bbe09d066d44fc4bed244094c87880b80b04d Mon Sep 17 00:00:00 2001
From: Gaming4JC <g4jc@hyperbola.info>
Date: Sun, 5 Jan 2020 12:15:22 -0500
Subject: Bug 1332233 - prevent resource leak in CustomElementRegistry::Define.

Tag UXP Issue mcp-graveyard/UXP%1344
---
 dom/base/CustomElementRegistry.cpp | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

(limited to 'dom/base')

diff --git a/dom/base/CustomElementRegistry.cpp b/dom/base/CustomElementRegistry.cpp
index 34ad9549d..897f7df12 100644
--- a/dom/base/CustomElementRegistry.cpp
+++ b/dom/base/CustomElementRegistry.cpp
@@ -817,14 +817,6 @@ CustomElementRegistry::Define(const nsAString& aName,
   // Associate the definition with the custom element.
   nsCOMPtr<nsIAtom> localNameAtom(NS_Atomize(localName));
   LifecycleCallbacks* callbacks = callbacksHolder.forget();
-  CustomElementDefinition* definition =
-    new CustomElementDefinition(nameAtom,
-                                localNameAtom,
-                                &aFunctionConstructor,
-                                Move(observedAttributes),
-                                constructorPrototype,
-                                callbacks,
-                                0 /* TODO dependent on HTML imports. Bug 877072 */);
 
   /**
    * 12. Add definition to this CustomElementRegistry.
@@ -834,6 +826,15 @@ CustomElementRegistry::Define(const nsAString& aName,
     return;
   }
 
+  CustomElementDefinition* definition =
+    new CustomElementDefinition(nameAtom,
+                                localNameAtom,
+                                &aFunctionConstructor,
+                                Move(observedAttributes),
+                                constructorPrototype,
+                                callbacks,
+                                0 /* TODO dependent on HTML imports. Bug 877072 */);
+
   mCustomDefinitions.Put(nameAtom, definition);
 
   MOZ_ASSERT(mCustomDefinitions.Count() == mConstructors.count(),
-- 
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