Fix GraphEdit's valid connections being reversed

(cherry picked from commit b29aff8dac9bf342e45e6b6332b5efa13af9fa26)

scene/gui/graph_edit.cpp

@@ -670,7 +670,7 @@ void GraphEdit::_top_layer_input(const Ref<InputEvent> &p_ev) {
 					for (int j = 0; j < gn->get_connection_output_count(); j++) {
 						Vector2 pos = gn->get_connection_output_position(j) + gn->get_position();
 						int type = gn->get_connection_output_type(j);
-						if ((type == connecting_type || valid_connection_types.has(ConnType(type, connecting_type))) && is_in_hot_zone(pos / zoom, mpos, port_size, false)) {
+						if ((type == connecting_type || valid_connection_types.has(ConnType(connecting_type, type))) && is_in_hot_zone(pos / zoom, mpos, port_size, false)) {
 							connecting_target = true;
 							connecting_to = pos;
 							connecting_target_to = gn->get_name();
@@ -682,7 +682,7 @@ void GraphEdit::_top_layer_input(const Ref<InputEvent> &p_ev) {
 					for (int j = 0; j < gn->get_connection_input_count(); j++) {
 						Vector2 pos = gn->get_connection_input_position(j) + gn->get_position();
 						int type = gn->get_connection_input_type(j);
-						if ((type == connecting_type || valid_connection_types.has(ConnType(type, connecting_type))) && is_in_hot_zone(pos / zoom, mpos, port_size, true)) {
+						if ((type == connecting_type || valid_connection_types.has(ConnType(connecting_type, type))) && is_in_hot_zone(pos / zoom, mpos, port_size, true)) {
 							connecting_target = true;
 							connecting_to = pos;
 							connecting_target_to = gn->get_name();
@@ -1554,26 +1554,17 @@ void GraphEdit::_update_zoom_label() {
 }
 
 void GraphEdit::add_valid_connection_type(int p_type, int p_with_type) {
-	ConnType ct;
-	ct.type_a = p_type;
-	ct.type_b = p_with_type;
-
+	ConnType ct(p_type, p_with_type);
 	valid_connection_types.insert(ct);
 }
 
 void GraphEdit::remove_valid_connection_type(int p_type, int p_with_type) {
-	ConnType ct;
-	ct.type_a = p_type;
-	ct.type_b = p_with_type;
-
+	ConnType ct(p_type, p_with_type);
 	valid_connection_types.erase(ct);
 }
 
 bool GraphEdit::is_valid_connection_type(int p_type, int p_with_type) const {
-	ConnType ct;
-	ct.type_a = p_type;
-	ct.type_b = p_with_type;
-
+	ConnType ct(p_type, p_with_type);
 	return valid_connection_types.has(ct);
 }