Fix bug in GridContainer not updating minimumsize when columns changes, fixes #4677

scene/gui/control.cpp

@@ -2266,7 +2266,7 @@ void  Control::_ref_font( Ref<Font> p_sc) {
 	}
 }
 
-void  Control::_unref_font(Ref<Font> p_sc) {
+void Control::_unref_font(Ref<Font> p_sc) {
 
 	ERR_FAIL_COND(!data.font_refcount.has(p_sc));
 	data.font_refcount[p_sc]--;

scene/gui/grid_container.cpp

@@ -158,6 +158,7 @@ void GridContainer::set_columns(int p_columns) {
 
 	columns=p_columns;
 	queue_sort();
+	minimum_size_changed();
 
 }