Merge branch 'fix/assertions' into 'master'

[h2on2] use correct index in assertion

See merge request !909

dumux/material/fluidsystems/h2on2.hh

@@ -249,7 +249,7 @@ public:
                                       const int phaseIdx,
                                       const int compIdx)
     {
-        assert(compIdx == wCompIdx && phaseIdx == liquidPhaseIdx);
+        assert(compIdx == H2OIdx && phaseIdx == liquidPhaseIdx);
 
         using std::exp;
         return fugacityCoefficient(fluidState, phaseIdx, compIdx)