22968497ad3319a3fafa28c7753f6935af75e5fa Fixed bug manifesting if a model is first estimated with cova_compute=0 and if the resulting mode file is loaded after.

================================ DYNARE MAKE CHECK MATLAB RESULTS ================================ | TOTAL: 205 | PASS: 204 | FAIL: 0 | XFAIL: 1 | XPASS: 0

================================ DYNARE MAKE CHECK OCTAVE RESULTS ================================ | TOTAL: 203 | PASS: 202 | FAIL: 0 | XFAIL: 1 | XPASS: 0

A full log can be found on karaba in '/tmp/dynare-master-check-Yi59osqsXW.log'.