Catch case where title is undefined

examples/graph2d/16_bothAxis_titles.html

@@ -151,7 +151,6 @@
         dataAxis: {
             showMinorLabels: false,
             title: {
-                left: false,
                 right: {
                     text: 'Right (right axis)'
                 }

lib/timeline/component/DataAxis.js

@@ -368,7 +368,10 @@ DataAxis.prototype._redrawLabels = function () {
   }
 
   // Note that title is rotated, so we're using the height, not width!
-  var titleWidth = this.options.title[orientation].text === undefined ? 0 : this.props.titleCharHeight;
+  var titleWidth = 0;
+  if(this.options.title[orientation] !== undefined) {
+    titleWidth = this.props.titleCharHeight;
+  }
   var offset = this.options.icons == true ? Math.max(this.options.iconWidth, titleWidth) + this.options.labelOffsetX + 15 : titleWidth + this.options.labelOffsetX + 15;
 
   // this will resize the yAxis to accommodate the labels.
@@ -470,7 +473,7 @@ DataAxis.prototype._redrawTitle = function (orientation) {
   DOMutil.prepareElements(this.DOMelements.title);
 
   // Check if the title is defined for this axes
-  if(this.options.title[orientation] == false || this.options.title[orientation].text === undefined) {
+  if(this.options.title[orientation] == undefined || this.options.title[orientation].text === undefined) {
     return;
   }
   var title = DOMutil.getDOMElement('div',this.DOMelements.title, this.dom.frame);