readline: ignore stray escape sequence

Fixes #2876.

lib/readline.js

@@ -523,6 +523,9 @@ Interface.prototype._ttyWrite = function(s, key) {
   var next_word, next_non_word, previous_word, previous_non_word;
   key = key || {};
 
+  // Ignore escape key - Fixes #2876
+  if (key.name == 'escape') return;
+
   if (key.ctrl && key.shift) {
     /* Control and shift pressed */
     switch (key.name) {