DRY advanced town help. Fix #611

src/pcedit/pc.main.cpp

@@ -49,6 +49,7 @@ rectangle pc_race_rect; //Holds current pc's race
 rectangle edit_rect[5]; //Buttons that bring up pc edit dialog boxs
 std::string scenario_temp_dir_name = "pc_scenario";
 std::vector<fs::path> extra_scen_dirs;
+std::string help_text_rsrc = "help";
 
 short current_active_pc = 0;