Fixed #1177: Fix custom range of slaved right axis.

lib/timeline/component/DataAxis.js

@@ -354,9 +354,8 @@ DataAxis.prototype._redrawLabels = function () {
   var orientation = this.options['orientation'];
 
   // get the range for the slaved axis
-  var step;
+  var step, stepSize, rangeStart, rangeEnd;
   if (this.master === false) {
-    var stepSize, rangeStart, rangeEnd, minimumStep;
     if (this.zeroCrossing !== -1 && this.options.alignZeros === true) {
       if (this.range.end > 0) {
         stepSize = this.range.end / this.zeroCrossing; // size of one step
@@ -374,14 +373,13 @@ DataAxis.prototype._redrawLabels = function () {
       rangeStart = this.range.start;
       rangeEnd = this.range.end;
     }
-    minimumStep = this.stepPixels;
   }
   else {
     // calculate range and step (step such that we have space for 7 characters per label)
-    minimumStep = this.props.majorCharHeight;
     rangeStart = this.range.start;
     rangeEnd = this.range.end;
   }
+  var minimumStep = this.props.majorCharHeight;
 
   this.step = step = new DataStep(
     rangeStart,