Set correct output dimension

src/ufo-filter-padding-2d.c

@@ -338,7 +338,7 @@ ufo_filter_padding_2d_init(UfoFilterPadding2D *self)
 {
     UfoFilterPadding2DPrivate *priv = self->priv = UFO_FILTER_PADDING_2D_GET_PRIVATE(self);
     UfoInputParameter input_params[] = {{2, UFO_FILTER_INFINITE_INPUT}};
-    UfoOutputParameter output_params[] = {{3}};
+    UfoOutputParameter output_params[] = {{2}};
 
     // set default values
     priv->xl = 1;