From 398e5555d96448c49fb0381d0df4a5cee25de741 Mon Sep 17 00:00:00 2001
From: Bryce Seager van Dyk <bvandyk@mozilla.com>
Date: Tue, 29 Oct 2019 19:31:19 +0000
Subject: [PATCH] Bug 1592371 - QueryDosDeviceWHook returns size of
 lpTargetPath copy on success. r=bobowen

Prior to the patch we appear to be returning the size of lpDeviceName rather
than lpTargetPath.

Differential Revision: https://phabricator.services.mozilla.com/D50979

--HG--
extra : moz-landing-system : lando
---
 dom/media/gmp/ChromiumCDMAdapter.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dom/media/gmp/ChromiumCDMAdapter.cpp b/dom/media/gmp/ChromiumCDMAdapter.cpp
index d5f34c7f8c18..c54f2832cff8 100644
--- a/dom/media/gmp/ChromiumCDMAdapter.cpp
+++ b/dom/media/gmp/ChromiumCDMAdapter.cpp
@@ -186,7 +186,7 @@ DWORD WINAPI QueryDosDeviceWHook(LPCWSTR lpDeviceName, LPWSTR lpTargetPath,
   PodCopy(lpTargetPath, device.c_str(), device.size());
   lpTargetPath[device.size()] = 0;
   GMP_LOG_DEBUG("QueryDosDeviceWHook %S -> %S", lpDeviceName, lpTargetPath);
-  return name.size();
+  return device.size();
 }
 
 static std::vector<std::wstring> GetDosDeviceNames() {