patch 8.2.3691: build failure with small features

Problem:    Build failure with small features.
Solution:   Add #ifdef. (Dominique Pellé)

src/gui.c

@@ -4413,8 +4413,10 @@ gui_update_scrollbars(
 	}
     }
 
+#ifdef FEAT_TITLE
     // update the title, it may show the scroll position
     maketitle();
+#endif
 
     prev_curwin = curwin;
     --hold_gui_events;