naming consistency

Author: TomBlock

core/src/main/java/com/bc/fiduceo/reader/slstr/SlstrPixelLocator.java

@@ -27,9 +27,9 @@ public Point2D[] getPixelLocation(double lon, double lat) {
         final Point2D[] pixelLocations = super.getPixelLocation(lon, lat);
         for (final Point2D point : pixelLocations) {
             final double mappedX = transform.inverseCoordinate_X(point.getX());
-            final double mappedy = transform.inverseCoordinate_Y(point.getY());
+            final double mappedY = transform.inverseCoordinate_Y(point.getY());
 
-            point.setLocation(mappedX + 0.5, mappedy + 0.5);
+            point.setLocation(mappedX + 0.5, mappedY + 0.5);
         }
         return pixelLocations;
     }