bug correction for dr.nspred when a variable is both backward and forward (bug...

bug correction for dr.nspred when a variable is both backward and forward (bug introduced in changeset 32c997f1 02/25/11)

matlab/set_state_space.m

@@ -112,6 +112,6 @@ dr.nfwrd = nfwrd;
 % number of forward variables in the state vector
 dr.nsfwrd = nfwrd;
 % number of predetermined variables in the state vector
-dr.nspred = npred;
+dr.nspred = npred+nboth;
 
 dr.transition_auxiliary_variables = [];