Don't crash when scaling Bitmaps with private Bitmap.Configs

                float scale = Math.min((float) maxWidth / width, (float) maxHeight / height);

                int newWidth = Math.round(scale * width);

                int newHeight = Math.round(scale * height);

                Bitmap outBitmap = Bitmap.createBitmap(newWidth, newHeight, bitmap.getConfig());

                Bitmap.Config newConfig = bitmap.getConfig();

                if (newConfig == null) {

                    newConfig = Bitmap.Config.ARGB_8888;

                }

                Bitmap outBitmap = Bitmap.createBitmap(newWidth, newHeight, newConfig);

                Canvas canvas = new Canvas(outBitmap);

                Paint paint = new Paint();

                paint.setAntiAlias(true);