-
When animating, we might be changing the size allocation of the previous stack child. However, we were not querying the size in the process meaning you would often see warnings about allocating the size without knowing what it should be. This simply adds an innocuous size request, since responding to last_child sizing requests is not all that critical in the transition. https://bugzilla.gnome.org/show_bug.cgi?id=763900
ca63330b