Merge pull request PhilJay#1315 from mikemonteith/master

Fixes PhilJay#1258

Author: PhilJay

MPChartLib/src/com/github/mikephil/charting/renderer/PieChartRenderer.java

@@ -246,7 +246,7 @@ public void drawValues(Canvas c) {
     public void drawExtras(Canvas c) {
         // drawCircles(c);
         drawHole(c);
-        c.drawBitmap(mDrawBitmap, 0, 0, mRenderPaint);
+        c.drawBitmap(mDrawBitmap, 0, 0, null);
         drawCenterText(c);
     }