Fix handling of warnings in perfect foresight solver with homotopy.

matlab/perfect-foresight-models/perfect_foresight_solver.m

@@ -68,6 +68,7 @@ if ~oo_.deterministic_simulation.status && ~options_.no_homotopy
     skipline()
     
     % Disable warnings if homotopy
+    warning_old_state = warning;
     warning off all
     % Do not print anything
     oldverbositylevel = options_.verbosity;
@@ -147,7 +148,7 @@ if ~oo_.deterministic_simulation.status && ~options_.no_homotopy
     fprintf('++++++++++++++++++++++++++++++++++++++++++++++++++++++++\n')
     skipline()
     options_.verbosity = oldverbositylevel;
-    warning on all
+    warning(warning_old_state);
 end
 
 if oo_.deterministic_simulation.status == 1