Merge pull request #2187 from vpop/update/redundant-nullcheck

Remove nullcheck for known non-null variable

Author: almic

MPChartLib/src/main/java/com/github/mikephil/charting/components/MarkerImage.java

@@ -142,10 +142,10 @@ public void draw(Canvas canvas, float posX, float posY) {
         float width = mSize.width;
         float height = mSize.height;
 
-        if (width == 0.f && mDrawable != null) {
+        if (width == 0.f) {
             width = mDrawable.getIntrinsicWidth();
         }
-        if (height == 0.f && mDrawable != null) {
+        if (height == 0.f) {
             height = mDrawable.getIntrinsicHeight();
         }