From 569510fbdc245f6b68fdb8c80aae3f2b985e4f2c Mon Sep 17 00:00:00 2001
From: Henri Sivonen <hsivonen@hsivonen.fi>
Date: Tue, 28 Aug 2018 14:50:11 +0000
Subject: [PATCH] Bug 1485289 - Use BeginWriting() instead of GetMutableData()
 in LateWriteChecks. r=froydnj

MozReview-Commit-ID: G64L8b6wnO0

Differential Revision: https://phabricator.services.mozilla.com/D3963

--HG--
extra : moz-landing-system : lando
---
 xpcom/build/LateWriteChecks.cpp | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/xpcom/build/LateWriteChecks.cpp b/xpcom/build/LateWriteChecks.cpp
index 8ef30a567093..1dbe7110fe39 100644
--- a/xpcom/build/LateWriteChecks.cpp
+++ b/xpcom/build/LateWriteChecks.cpp
@@ -133,8 +133,7 @@ LateWriteObserver::Observe(IOInterposeObserver::Observation& aOb)
 
   nsTAutoString<char_type> nameAux(mProfileDirectory);
   nameAux.AppendLiteral(NS_SLASH "Telemetry.LateWriteTmpXXXXXX");
-  char_type* name;
-  nameAux.GetMutableData(&name);
+  char_type* name = nameAux.BeginWriting();
 
   // We want the sha1 of the entire file, so please don't write to fd
   // directly; use sha1Stream.