Initialization handles when-clauses within algorithms wrong

[Lennart Ochel]

See the following example:

model Test
  Real r[2];
algorithm
  r[1] := 2;
  when time > 0.5 then
    r := zeros(2);
  end when;
end Test;

Output:

Notification: The given system is mixed-determined.   [index > 0]
Notification: The given system is mixed-determined.   [index > 1]
Notification: The given system is mixed-determined.   [index > 2]
Notification: The given system is mixed-determined.   [index > 3]
Error: No system for the symbolic initialization was generated.

[Lennart Ochel]

I have a fix for this, but cannot commit it since it breaks Adrian’s hack for #3209. I think Mahder wants to fix the expansion of crefs properly. Therewith, my fix for this ticket should work fine.