fixed bug introduced in commit caa04fb2

(cherry picked from commit 8fb08096)

matlab/dyn_first_order_solver.m

@@ -274,7 +274,8 @@ else
     opts.UT = true;
     opts.TRANSA = true;
     hx1 = linsolve(tt(indx_stable_root, indx_stable_root),Z11,opts)';
-    opts.TRANSA = false; % needed by Octave 4.0.0
+    opts.UT = false;      % needed by Octave 4.0.0
+    opts.TRANSA = false;  % needed by Octave 4.0.0
     hx2 = linsolve(Z11,ss(indx_stable_root, indx_stable_root)',opts)';
     hx =  hx1*hx2;
     ghx = [hx(k1,:); gx(k2(nboth+1:end),:)];