[tbb-commits] [tor-browser] 234/311: Bug 1760847 - Deallocate linked list nodes when RemoveBottom() is called r=emilio a=dmeehan

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pierov pushed a commit to branch geckoview-99.0.1-11.0-1
in repository tor-browser.

commit 80fe4770cc9236da1077cb2c0b429cb34b0e2c65
Author: Miko Mynttinen <mikokm at gmail.com>
AuthorDate: Tue Mar 22 22:34:37 2022 +0000

    Bug 1760847 - Deallocate linked list nodes when RemoveBottom() is called r=emilio a=dmeehan
    
    Differential Revision: https://phabricator.services.mozilla.com/D141789
---
 layout/painting/nsDisplayList.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/layout/painting/nsDisplayList.h b/layout/painting/nsDisplayList.h
index 4395412862c08..b41bb874c1f04 100644
--- a/layout/painting/nsDisplayList.h
+++ b/layout/painting/nsDisplayList.h
@@ -3250,7 +3250,10 @@ class nsDisplayList {
     }
 
     nsDisplayItem* bottom = mBottom->mValue;
-    mBottom = mBottom->mNext;
+
+    auto next = mBottom->mNext;
+    Deallocate(mBottom);
+    mBottom = next;
 
     if (!mBottom) {
       // No bottom item means no items at all.

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