Removes unnecessary HTML scape chars sanitation on Arduino code generation.

Originally placed before the code diff feature was added, it is no longer required. This was also causing issues with code being displayed with the scape characters instead of HTML unsafe symbols.

Fixes #47.

ardublockly/ardublockly.js

@@ -609,8 +609,7 @@ Ardublockly.XmlTextareaToBlocks = function() {
  * @type {!String}
  * @private
  */
-Ardublockly.PREVIOUS_ARDUINO_CODE_ =
-    'void setup() {\n\n}\n\n\nvoid loop() {\n\n}';
+Ardublockly.PREV_ARDUINO_CODE_ = 'void setup() {\n\n}\n\n\nvoid loop() {\n\n}';
 
 /**
  * Populate the Arduino Code and Blocks XML panels with content generated from
@@ -618,20 +617,12 @@ Ardublockly.PREVIOUS_ARDUINO_CODE_ =
  */
 Ardublockly.renderContent = function() {
   // Only regenerate the code if a block is not being dragged
-  if (Ardublockly.blocklyIsDragging()) {
-    return;
-  }
+  if (Ardublockly.blocklyIsDragging()) return;
 
   // Render Arduino Code with latest change highlight and syntax highlighting
   var arduinoCode = Ardublockly.generateArduino();
-  if (arduinoCode !== Ardublockly.PREVIOUS_ARDUINO_CODE_) {
-    var arduinoContent = document.getElementById('content_arduino');
-    // Sets content in case of no pretify and serves as a fast way to scape html
-    arduinoContent.textContent = arduinoCode;
-    arduinoCode = arduinoContent.innerHTML;
-    if (typeof prettyPrintOne == 'function') {
-      var diff = JsDiff.diffWords(Ardublockly.PREVIOUS_ARDUINO_CODE_,
-                                  arduinoCode);
+  if (arduinoCode !== Ardublockly.PREV_ARDUINO_CODE_) {
+    var diff = JsDiff.diffWords(Ardublockly.PREV_ARDUINO_CODE_, arduinoCode);
     var resultStringArray = [];
     for (var i = 0; i < diff.length; i++) {
       if (diff[i].added) {
@@ -641,15 +632,13 @@ Ardublockly.renderContent = function() {
         resultStringArray.push(diff[i].value);
       }
     }
-      var codeHtml = prettyPrintOne(resultStringArray.join(''), 'cpp', false);
-      arduinoContent.innerHTML = codeHtml;
-    }
-    Ardublockly.PREVIOUS_ARDUINO_CODE_ = arduinoCode;
+    document.getElementById('content_arduino').innerHTML =
+        prettyPrintOne(resultStringArray.join(''), 'cpp', false);
+    Ardublockly.PREV_ARDUINO_CODE_ = arduinoCode;
   }
 
   // Generate plain XML into element
-  var xmlContent = document.getElementById('content_xml');
-  xmlContent.value = Ardublockly.generateXml();
+  document.getElementById('content_xml').value = Ardublockly.generateXml();
 };
 
 /**