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;

src/version.c

@@ -757,6 +757,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    3691,
 /**/
     3690,
 /**/