more understandable prompt to save

src/scenedit/scen.actions.cpp

@@ -2661,12 +2661,16 @@ void start_dialogue_editing(short restoring) {
 	redraw_screen();
 }
 
-bool save_check(std::string which_dlog) {
+bool save_check(std::string which_dlog, bool allow_no) {
 	std::string choice;
 	
 	if(!change_made)
 		return true;
-	choice = cChoiceDlog(which_dlog, {"save","revert","cancel"}).show();
+	cChoiceDlog dlog(which_dlog, {"save","revert","cancel"});
+	if(!allow_no){
+		dlog->getControl("revert").hide();
+	}
+	choice = dlog.show();
 	if(choice == "revert")
 		return true;
 	else if(choice == "cancel")

src/scenedit/scen.actions.hpp

@@ -44,7 +44,7 @@ void update_mouse_spot(location the_point);
 bool monst_on_space(location loc,short m_num);
 void place_edit_special(location loc);
 void set_special(location spot_hit);
-bool save_check(std::string which_dlog);
+bool save_check(std::string which_dlog, bool allow_no = true);
 
 /// Represents the action of adding a new town to the end of the list
 class aNewTown : public cAction {

src/scenedit/scen.main.cpp

@@ -108,7 +108,7 @@ void launch_scenario() {
 	}
 
 	// Prompt to save first
-	if(!save_check("save-before-launch")) return;
+	if(!save_check("save-before-launch", false)) return;
 
 	fs::path game_binary;
 #ifdef SFML_SYSTEM_MACOS