From 0d7916746ab834af414d6ed6f71a81882eceb76a Mon Sep 17 00:00:00 2001
From: Thomas Lichtenegger <thomas.lichtenegger@jku.at>
Date: Tue, 22 May 2018 15:23:35 +0200
Subject: [PATCH] Added return NULL to silence compiler.

---
 .../ZehnerSchluenderThermCond/ZehnerSchluenderThermCond.C        | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/lagrangian/cfdemParticle/subModels/thermCondModel/ZehnerSchluenderThermCond/ZehnerSchluenderThermCond.C b/src/lagrangian/cfdemParticle/subModels/thermCondModel/ZehnerSchluenderThermCond/ZehnerSchluenderThermCond.C
index e7647b7a..7e4ca613 100644
--- a/src/lagrangian/cfdemParticle/subModels/thermCondModel/ZehnerSchluenderThermCond/ZehnerSchluenderThermCond.C
+++ b/src/lagrangian/cfdemParticle/subModels/thermCondModel/ZehnerSchluenderThermCond/ZehnerSchluenderThermCond.C
@@ -181,6 +181,7 @@ tmp<volScalarField> ZehnerSchluenderThermCond::thermCond() const
 tmp<volScalarField> ZehnerSchluenderThermCond::thermDiff() const
 {
     FatalError << "ZehnerSchluenderThermCond does not provide thermal diffusivity." << abort(FatalError);
+    return tmp<volScalarField>(NULL);
 }
 
 void ZehnerSchluenderThermCond::calcPartKsField() const