correction for hessian: the one from compiled <mod>_dynamic.dll is not sparse but

the one from the matlab version <mod>_dynamic.m is so we sparse it anyway to be able to pass it to sparse_hessian_times_B_kronecker_C


git-svn-id: https://www.dynare.org/svn/dynare/trunk@2564 ac1d8469-bf42-47a9-8791-bf33cf982152

matlab/dr1.m

@@ -543,7 +543,7 @@ function [dr,info,M_,options_,oo_] = dr1(dr,task,M_,options_,oo_)
     zx=[zx; zeros(M_.exo_nbr,np);zeros(M_.exo_det_nbr,np)];
     zu=[zu; eye(M_.exo_nbr);zeros(M_.exo_det_nbr,M_.exo_nbr)];
     [nrzx,nczx] = size(zx);
-    
+    hessian = sparse(hessian);
     rhs = -sparse_hessian_times_B_kronecker_C(hessian,zx);
     
     %lhs