fixed LineChartRenderer to get correct x values when using cubicFill
diff --git a/MPChartLib/src/main/java/com/github/mikephil/charting/renderer/LineChartRenderer.java b/MPChartLib/src/main/java/com/github/mikephil/charting/renderer/LineChartRenderer.java
index ada9c37..74af4d0 100644
--- a/MPChartLib/src/main/java/com/github/mikephil/charting/renderer/LineChartRenderer.java
+++ b/MPChartLib/src/main/java/com/github/mikephil/charting/renderer/LineChartRenderer.java
@@ -252,8 +252,8 @@
         float fillMin = dataSet.getFillFormatter()
                 .getFillLinePosition(dataSet, mChart);
 
-        spline.lineTo(bounds.min + bounds.range, fillMin);
-        spline.lineTo(bounds.min, fillMin);
+        spline.lineTo(dataSet.getEntryForIndex(mXBounds.max).getX(), fillMin);
+        spline.lineTo(dataSet.getEntryForIndex(mXBounds.min).getX(), fillMin);
         spline.close();
 
         trans.pathValueToPixel(spline);