Fixed bug (karaba:/var/tmp/dynare-master-check-WMwywKtbcz.log). dr.state_var...

Fixed bug (karaba:/var/tmp/dynare-master-check-WMwywKtbcz.log). dr.state_var is not defined in all cases...

matlab/disp_dr.m

@@ -103,7 +103,11 @@ end
 %
 for k=1:nx
     flag = 0;
-    str1 = subst_auxvar(dr.state_var(k),-1);
+    if isfield(dr,'state_var')
+        str1 = subst_auxvar(dr.state_var(k),-1);
+    else
+        str1 = subst_auxvar(k1(klag(k,1)),klag(k,2)-M_.maximum_lag-2);
+    end
     str = sprintf('%-20s',str1);
     for i=1:nvar
         x = dr.ghx(ivar(i),k);