[rans] Fix compilation

dumux/freeflow/rans/oneeq/volumevariables.hh

@@ -336,7 +336,7 @@ protected:
     Scalar eddyDiffusivity_ = 0.0;
     Scalar viscosityTilde_ = 0.0;
     Scalar storedViscosityTilde_ = 0.0;
-    DimVector storedViscosityTildeGradient_ = 0.0;
+    DimVector storedViscosityTildeGradient_ = DimVector(0.0);
     Scalar stressTensorScalarProduct_ = 0.0;
     Scalar vorticityTensorScalarProduct_ = 0.0;
 };

dumux/freeflow/rans/twoeq/komega/volumevariables.hh

@@ -265,9 +265,9 @@ protected:
     Scalar dissipation_ = 0.0;
     Scalar turbulentKineticEnergy_ = 0.0;
     Scalar storedDissipation_ = 0.0;
-    DimVector storedDissipationGradient_ = 0.0;
+    DimVector storedDissipationGradient_ = DimVector(0.0);
     Scalar storedTurbulentKineticEnergy_ = 0.0;
-    DimVector storedTurbulentKineticEnergyGradient_ = 0.0;
+    DimVector storedTurbulentKineticEnergyGradient_ = DimVector(0.0);
     Scalar stressTensorScalarProduct_ = 0.0;
 };