From 3958347bef8c497dbbb32cdcece5e3a98d8ee85b Mon Sep 17 00:00:00 2001
From: andheh <36114788+andheh@users.noreply.github.com>
Date: Mon, 26 Feb 2018 11:37:54 +0100
Subject: [PATCH] fixed a "unused variable" warning in src/Project.cpp

... and made pointer semantics more visible
---
 src/Project.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/Project.cpp b/src/Project.cpp
index dd9abc325..d4b531c08 100644
--- a/src/Project.cpp
+++ b/src/Project.cpp
@@ -4490,14 +4490,16 @@ void AudacityProject::InitialState()
 
 bool AudacityProject::UndoAvailable()
 {
+   TrackList* trackList = GetTracks();
    return GetUndoManager()->UndoAvailable() &&
-      !GetTracks()->HasPendingTracks();
+       !(trackList != nullptr && trackList->HasPendingTracks());
 }
 
 bool AudacityProject::RedoAvailable()
 {
+   TrackList* trackList = GetTracks();
    return GetUndoManager()->RedoAvailable() &&
-      !GetTracks()->HasPendingTracks();
+       !(trackList != nullptr && trackList->HasPendingTracks());
 }
 
 void AudacityProject::PushState(const wxString &desc, const wxString &shortDesc)