503d2baa89e7184ac18a644d833b38c8d84eff7f Fix bug in deterministic conditional forecast.

================================ DYNARE MAKE CHECK MATLAB RESULTS ================================ | TOTAL: 415 | PASS: 413 | FAIL: 0 | XFAIL: 2 | XPASS: 0

================================ DYNARE MAKE CHECK OCTAVE RESULTS ================================ | TOTAL: 413 | PASS: 411 | FAIL: 0 | XFAIL: 2 | XPASS: 0

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