Make sure raw mode is disabled when exiting a terminal-based REPL.

lib/repl.js

@@ -423,7 +423,7 @@ function defineDefaultCommands(repl) {
   repl.defineCommand('exit', {
     help: 'Exit the repl',
     action: function() {
-      this.stream.destroy();
+      this.rli.close();
     }
   });