e5ba3121749cc5516d072a64032fe7275a9b6fc6 Perfect foresight homotopy: make sure that oo_.endo_simul is not corrupted by failed simulation.

================================ DYNARE MAKE CHECK MATLAB RESULTS ================================ | TOTAL: 443 | PASS: 441 | FAIL: 0 | XFAIL: 2 | XPASS: 0

================================ DYNARE MAKE CHECK OCTAVE RESULTS ================================ | TOTAL: 441 | PASS: 439 | FAIL: 0 | XFAIL: 2 | XPASS: 0

A full log can be found on karaba in '/tmp/dynare-master-check-wNJFTcn7Kk.log'.