[material] fix use of wrong componentIdx and unused variables

dumux/material/fluidstates/2p2cfluidstate.hh

@@ -145,7 +145,7 @@ public:
     Scalar partialPressure(int phaseIdx, int componentIdx) const
     {
         if(phaseIdx==nPhaseIdx)
-            return partialPressure(nCompIdx);
+            return partialPressure(componentIdx);
         else
             DUNE_THROW(Dune::NotImplemented, "Not implemented for non-gaseous phases!");
     }

dumux/material/fluidstates/pseudo1p2cfluidstate.hh

@@ -107,7 +107,7 @@ public:
     Scalar partialPressure(int phaseIdx, int componentIdx) const
     {
         if(phaseIdx==nPhaseIdx)
-            return partialPressure(nCompIdx);
+            return partialPressure(componentIdx);
         else
             DUNE_THROW(Dune::NotImplemented, "Not implemented for non-gaseous phases!");
     }

dumux/material/fluidsystems/h2oairfluidsystem.hh

@@ -414,14 +414,6 @@ public:
                     * fluidState.averageMolarMass(nPhaseIdx)
                     / std::max(1e-5, sumMoleFrac);
 
-            const Scalar partialPressureH2O =
-                fluidState.moleFraction(nPhaseIdx, H2OIdx)  *
-                fluidState.pressure(nPhaseIdx);
-
-            const Scalar partialPressureAir =
-                fluidState.moleFraction(nPhaseIdx, AirIdx)  *
-                fluidState.pressure(nPhaseIdx);
-
             return
                 H2O::gasDensity(T, fluidState.partialPressure(nPhaseIdx, H2OIdx)) +
                 Air::gasDensity(T, fluidState.partialPressure(nPhaseIdx, AirIdx));