e396b4d86d8457b72da23c2ac5ba0889ffa269a6 smoother2histval/test: change datafile to avoid non-posdef matrix under MATLAB.

================================ DYNARE MAKE CHECK MATLAB RESULTS ================================ | TOTAL: 442 | PASS: 440 | FAIL: 0 | XFAIL: 2 | XPASS: 0

================================ DYNARE MAKE CHECK OCTAVE RESULTS ================================ | TOTAL: 440 | PASS: 438 | FAIL: 0 | XFAIL: 2 | XPASS: 0

A full log can be found on karaba in '/tmp/dynare-master-check-5CbNFJQSR6.log'.