Restoring a game can return to the wishing prompt

In TTY or curses, if the terminal goes away while you're in the wishing
prompt, return to the prompt when the game is restored.

Breaks saves.

win/curses/cursdial.c

@@ -308,6 +308,7 @@ curses_character_input_dialog(
         answer = curses_read_char();
 #endif
         if (answer == ERR) {
+            iflags.term_gone = 1;
             answer = def;
             break;
         }
@@ -451,6 +452,8 @@ curses_ext_cmd(void)
         curs_set(0);
         prompt_width = (int) strlen(cur_choice);
 
+        if (letter == ERR)
+            iflags.term_gone = 1;
         if (letter == '\033' || letter == ERR) {
             ret = -1;
             break;
@@ -1518,6 +1521,7 @@ menu_get_selections(WINDOW *win, nhmenu *menu, int how)
         curletter = curses_getch();
 
         if (curletter == ERR) {
+            iflags.term_gone = 1;
             num_selected = -1;
             dismiss = TRUE;
         }