do not crash on fault in debugger

console_ncurses.cpp

@@ -138,6 +138,7 @@ void console_ncurses::panel_update_thread()
 		myusleep(1000000 / refresh_rate);
 
 		// note that these are approximately as there's no mutex on the emulation
+		try {
 			uint16_t current_PSW   = c->getPSW();
 			int      run_mode      = current_PSW >> 14;
 
@@ -205,6 +206,12 @@ void console_ncurses::panel_update_thread()
 			mvwprintw(w_panel->win, 3, 46, "%s - %s",
 					instruction.c_str(),
 					work_values.c_str());
+		}
+		catch(int trap) {
+			std::unique_lock<std::mutex> lck(ncurses_mutex);
+
+			werase(w_panel->win);
+		}
 
 		// speed
 		uint64_t cur_instr_cnt = c->get_instructions_executed_count();