BUG: Fixing entry consistency in PhaseMixtureEThermo.C

and reading dpdt in one basicThermo constructor

applications/solvers/multiphase/interCondensatingEvaporatingFoam/temperaturePhaseChangeTwoPhaseMixtures/twoPhaseMixtureEThermo/twoPhaseMixtureEThermo.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2016 OpenCFD Ltd.
+    \\  /    A nd           | Copyright (C) 2016-2019 OpenCFD Ltd.
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -570,7 +570,7 @@ bool Foam::twoPhaseMixtureEThermo::read()
 {
     if (basicThermo::read() && thermoIncompressibleTwoPhaseMixture::read())
     {
-        basicThermo::readEntry("pDivU", pDivU_);
+        basicThermo::readIfPresent("pDivU", pDivU_);
         basicThermo::readEntry("TSat", TSat_);
         return true;
     }

src/thermophysicalModels/basic/basicThermo/basicThermo.C

@@ -242,7 +242,9 @@ Foam::basicThermo::basicThermo
         ),
         mesh,
         dimensionedScalar(dimensionSet(1, -1, -1, 0, 0), Zero)
-    )
+    ),
+
+    dpdt_(lookupOrDefault<Switch>("dpdt", true))
 {}