Fix showing empty rating at some points in time in rating chart (#2551)

Co-authored-by: Ivan <v23620@gmail.com>

src/main/java/com/faforever/client/player/PlayerRatingChart.java

@@ -137,7 +137,7 @@ private void buildData(List<PathElement> elements) {
           putMapRatingValue(++leftXCoordinate, value += augmentation);
         }
       } else {
-        putMapRatingValue(leftXCoordinate, rating1);
+        putMapRatingValue(++leftXCoordinate, rating1);
       }
     }
   }