unused variable: g.restoring

Get rid of the last reference to 'g.restoring' (which managed to
unintentionally survive the change to 'g.program_state.restoring').

Also have suppress_map_output() check 'g.program_state.saving' and
switch the couple of checks against that flag to use the function.

include/decl.h

@@ -1131,7 +1131,6 @@ struct instance_globals {
     /* restore.c */
     int n_ids_mapped;
     struct bucket *id_map;
-    boolean restoring;
     struct fruit *oldfruit;
     long omoves;
 

src/botl.c

@@ -249,8 +249,8 @@ bot(void)
 {
     /* dosave() flags completion by setting u.uhp to -1; supprss_map_output()
        covers program_state.restoring and is used for status as well as map */
-    if (u.uhp != -1 && g.youmonst.data && iflags.status_updates
+    if (u.uhp != -1 && g.youmonst.data
-        && !g.program_state.saving && !suppress_map_output()) {
+        && iflags.status_updates && !suppress_map_output()) {
         if (VIA_WINDOWPORT()) {
             bot_via_windowport();
         } else {
@@ -273,8 +273,7 @@ timebot(void)
        to skip update; suppress_map_output() handles program_state.restoring
        and program_state.done_hup (tty hangup => no further output at all)
        and we use it for maybe skipping status as well as for the map */
-    if (flags.time && iflags.status_updates
+    if (flags.time && iflags.status_updates && !suppress_map_output()) {
-        && !g.program_state.saving && !suppress_map_output()) {
         if (VIA_WINDOWPORT()) {
             stat_update_time();
         } else {

src/decl.c

@@ -580,7 +580,6 @@ const struct instance_globals g_init = {
     /* restore.c */
     0, /* n_ids_mapped */
     0, /* id_map */
-    FALSE, /* restoring */
     UNDEFINED_PTR, /* oldfruit */
     UNDEFINED_VALUE, /* omoves */
 

src/display.c

@@ -539,7 +539,7 @@ warning_of(struct monst *mon)
 boolean
 suppress_map_output(void)
 {
-    if (g.in_mklev || g.program_state.restoring)
+    if (g.in_mklev || g.program_state.saving || g.program_state.restoring)
         return TRUE;
 #ifdef HANGUPHANDLING
     if (g.program_state.done_hup)
@@ -1480,7 +1480,7 @@ redraw_map(void)
      * !u.ux: display isn't ready yet; (restoring || !on_level()): was part
      * of cliparound() but interface shouldn't access this much internals
      */
-    if (!u.ux || g.restoring || !on_level(&u.uz0, &u.uz))
+    if (!u.ux || suppress_map_output() || !on_level(&u.uz0, &u.uz))
         return;
 
     /*
@@ -1829,7 +1829,7 @@ flush_screen(int cursor_on_u)
     glyph_info bkglyphinfo = nul_glyphinfo;
 
     /* 3.7: don't update map, status, or perm_invent during save/restore */
-    if (g.program_state.saving || g.program_state.restoring)
+    if (suppress_map_output())
         return;
 
     if (cursor_on_u == -1)

src/invent.c

@@ -2346,12 +2346,12 @@ learn_unseen_invent(void)
 
 /* persistent inventory window is maintained by interface code;
    'update_inventory' used to be a macro for
-   (*windowprocs.win_update_inventory) but the restore hackery
+   (*windowprocs.win_update_inventory) but the restore hackery to suppress
-   was getting out of hand; this is now a central call point */
+   screen updates was getting out of hand; this is now a central call point */
 void
 update_inventory(void)
 {
-    if (g.program_state.saving || g.program_state.restoring)
+    if (suppress_map_output()) /* despite name, used for perm_invent too */
         return;
 
     /*

src/restore.c

@@ -756,7 +756,9 @@ dorecover(NHFILE* nhfp)
     int rtmp;
     struct obj *otmp;
 
+    /* suppress map display if some part of the code tries to update that */
     g.program_state.restoring = 1;
+
     get_plname_from_file(nhfp, g.plname);
     getlev(nhfp, 0, (xchar) 0);
     if (!restgamestate(nhfp, &stuckid, &steedid)) {