curses line-of-input prompting

Redo the fake ESC handling for curses' wgetnstr() so that it
applies to all popup prompts rather than just to "Who are you?",
in case the player sets the 'popup_dialog' option.

win/curses/cursmain.c

@@ -240,9 +240,6 @@ curses_player_selection()
 void
 curses_askname()
 {
-    const char *bail_msg = "Until next time then...";
-    int trylimit = 10;
-
 #ifdef SELECTSAVED
     if (iflags.wc2_selectsaved && !iflags.renameinprogress)
         switch (restore_menu(MAP_WIN)) {
@@ -255,29 +252,16 @@ curses_askname()
         }
 #endif /* SELECTSAVED */
 
-    do {
-        if (--trylimit < 0) {
-             bail_msg = "A name is required; giving up.";
-             goto bail;
-        }
-
-        g.plname[0] = '\0';
-        /* for askname(), this will use wgetnstr() which treats ESC like
-           an ordinary character; fake the behavior we want:  as kill_char
-           if it follows any input or as cancel if it is at the start;
-           player has to type <escape><return> to get back here though */
-        curses_line_input_dialog("Who are you?", g.plname, PL_NSIZ);
-
-        if (g.plname[0] == '\033')
-            goto bail;
-        (void) mungspaces(g.plname);
-    } while (!g.plname[0] || index(g.plname, '\033') != 0);
-
-    /* we get here if input is non-empty and doesn't contain ESC */
-    return;
+    curses_line_input_dialog("Who are you?", g.plname, PL_NSIZ);
+    (void) mungspaces(g.plname);
+    if (g.plname[0] && g.plname[0] != '\033') {
+         iflags.renameallowed = TRUE; /* tty uses this, we don't [yet?] */
+         return;
+    }
 
  bail:
-    curses_bail(bail_msg);
+    /* message is delivered via raw_print() */
+    curses_bail("\nUntil next time then...\n");
     /*NOTREACHED*/
 }