From 06bcf38841fd2c04512e785e7dc858c15c055281 Mon Sep 17 00:00:00 2001
From: Kershaw Chang <kershaw@mozilla.com>
Date: Fri, 18 Dec 2020 12:37:13 +0000
Subject: [PATCH] Bug 1682800 - Make inflation fail if there is no enough
 memory r=necko-reviewers,valentin

Differential Revision: https://phabricator.services.mozilla.com/D100060
---
 netwerk/protocol/websocket/WebSocketChannel.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/netwerk/protocol/websocket/WebSocketChannel.cpp b/netwerk/protocol/websocket/WebSocketChannel.cpp
index 3500529629e0..0193e4903e1d 100644
--- a/netwerk/protocol/websocket/WebSocketChannel.cpp
+++ b/netwerk/protocol/websocket/WebSocketChannel.cpp
@@ -855,7 +855,10 @@ class PMCECompression {
 
       uint32_t inflated = kBufferLen - mInflater.avail_out;
       if (inflated > 0) {
-        _retval.Append(reinterpret_cast<char*>(mBuffer), inflated);
+        if (!_retval.Append(reinterpret_cast<char*>(mBuffer), inflated,
+                            fallible)) {
+          return NS_ERROR_OUT_OF_MEMORY;
+        }
       }
 
       mInflater.avail_out = kBufferLen;