Use the correct memory according to build type

The TILES and CURSES memory are separate things.  We were using the
TILES memory for both types of build.  Instead, use the appropriate one.

src/map.cpp

@@ -1345,7 +1345,11 @@ uint8_t map::get_known_connections( const tripoint &p, int connect_group ) const
     uint8_t val = 0;
     auto const is_memorized =
     [&]( const tripoint & q ) {
+#ifdef TILES
         return !g->u.get_memorized_tile( getabs( q ) ).tile.empty();
+#else
+        return g->u.get_memorized_symbol( getabs( q ) );
+#endif
     };
 
     // populate connection information