Fixed some Sonarlint warnings

Author: litetex

app/src/main/java/org/schabi/newpipe/settings/notifications/NotificationModeConfigAdapter.kt

@@ -92,7 +92,7 @@ class NotificationModeConfigAdapter(
             } else {
                 NotificationMode.ENABLED
             }
-            listener.onModeChange(adapterPosition, mode)
+            listener.onModeChange(bindingAdapterPosition, mode)
         }
     }
 

app/src/main/java/org/schabi/newpipe/util/PicassoHelper.java

@@ -179,6 +179,7 @@ public void onBitmapFailed(final Exception e, final Drawable errorDrawable) {
 
                     @Override
                     public void onPrepareLoad(final Drawable placeHolderDrawable) {
+                        // Nothing to do
                     }
                 });
     }