Fix the save action

- Prompt for filename if the game has never been saved
- Don't say the game was saved if file choice was cancelled (affects save as too)

src/game/boe.actions.cpp

@@ -2228,12 +2228,15 @@ void do_save(short mode) {
 		return;
 	}
 	fs::path file = univ.file;
-	if(mode == 1) file = nav_put_party(file);
+	if(mode == 1 || file.empty())
+		file = nav_put_party(file);
+	bool saved = false;
 	if(!file.empty()) {
 		univ.file = file;
-		save_party(univ.file, univ);
+		saved = save_party(univ.file, univ);
 	}
 	
+	if(saved)
 		add_string_to_buf("Save: Game saved");
 	
 	pause(6);