setState_dTX from PartialSimpleMedium will result in an assert return…

…ing false always (i.e. Medium is incompressible )

git-svn-id: https://svn.modelica.org/projects/Modelica/trunk@385 7ce873d0-865f-4ce7-a662-4bb36ea78beb

Media/package.mo

@@ -5284,7 +5284,7 @@ quantities are assumed to be constant.
       input MassFraction X[:] = fill(0,0) "Mass fractions";
       output ThermodynamicState state;
     algorithm 
-      state := ThermodynamicState(p=d*R_gas*T,T=T);
+      assert(false,"pressure can not be computed from temperature and density for an incompressible fluid!");
     end setState_dTX;
 
     redeclare function extends dynamicViscosity "Return dynamic viscosity"