if present, the else in an if should always be forced statement

lib/output.js

@@ -649,7 +649,7 @@ function OutputStream(options) {
             output.space();
             output.print("else");
             output.space();
-            self.alternative.print(output);
+            force_statement(self.alternative, output);
         } else {
             self._do_print_body(output);
         }