Reset the outputValues array to the correct value

IntComp/Computer.js

@@ -412,7 +412,7 @@ module.exports = class Computer {
      */
     Reset() {
         this.stack = new Stack(this._initialMemory);
-        this.outputValues = null;
+        this.outputValues = [];
         this.outputComputer = null;
         this.options.inputModeMap = DeepClone(this.options._initialInputModeMap);
     }