Fix dark_room glyphs when restored from save

If color or dark_room options were toggled during gameplay, and then
the game is saved and restored with different options, the dark room
glyphs were wrong.

Reported by both Boudewijn and Pat.

src/restore.c

@@ -883,6 +883,7 @@ register int fd;
     load_qtlist(); /* re-load the quest text info */
     /* Set up the vision internals, after levl[] data is loaded */
     /* but before docrt().					    */
+    reglyph_darkroom();
     vision_reset();
     vision_full_recalc = 1; /* recompute vision (not saved) */