Buildings.Occupants use non-initialized localSeed

[mwetter]

Occupancy models in Buildings.Occupants don't initialize the localSeed, such as in

function binaryVariableGeneration "Binary variables random generator"
  input Real p(min=0, max=1) "Probaility of 1";
  input Integer globalSeed "Seed for the random number generator";
  output Boolean y "Random number";
protected 
  Integer localSeed "Local seed";
  Integer state[Modelica.Math.Random.Generators.Xorshift1024star.nState];
  Real r(min=0, max=1) "Generated random number";
algorithm 
  state := Modelica.Math.Random.Generators.Xorshift1024star.initialState(localSeed, globalSeed);
  (r, state) := Modelica.Math.Random.Generators.Xorshift1024star.random(state);
  y := r < p;
...
end binaryVariableGeneration;

This gives results that can change from one simulation to the other, as reported by OpenModelica.

The fix is to initialize localSeed.