allow undefined symbols in steady_state_models

src/ModelEquationBlock.cc

@@ -147,6 +147,7 @@ SteadyStateModel::checkPass(ModFileStructure& mod_file_struct, WarningConsolidat
           warnings << "WARNING: in the 'steady_state_model' block, variable '"
                    << symbol_table.getName(symb_id) << "' is declared twice" << endl;
 
+      /* Don't do the check for Julia
       // Check that expression has no undefined symbol
       if (!mod_file_struct.ramsey_model_present)
         {
@@ -163,7 +164,7 @@ SteadyStateModel::checkPass(ModFileStructure& mod_file_struct, WarningConsolidat
                 exit(EXIT_FAILURE);
               }
         }
-
+      */
       so_far_defined.insert(symb_ids.begin(), symb_ids.end());
     }