Nested for-loops over lists segfaults

[Per Östlund]

Calling this function results in a segfault, even if nothing is done inside the for-loops:

function test
protected
  list<Integer> l1, l2;
algorithm
  l1 := {1, 2, 3};
  l2 := {4, 5, 6};

  for e1 in l1 loop
    for e2 in l2 loop
    end for;
  end for;
end test;

[Martin Sjölund]

Fixed in r22270.