patch 8.0.1571: can't build without GUI

Problem:    Can't build without GUI.
Solution:   Adjust #ifdef for gui_find_menu().

src/menu.c

@@ -2462,6 +2462,7 @@ winbar_click(win_T *wp, int col)
 }
 
 #if defined(FEAT_GUI_MSWIN) || defined(FEAT_GUI_GTK) \
+	|| defined(FEAT_TERM_POPUP_MENU) \
 	|| defined(FEAT_BEVAL_TIP) || defined(PROTO)
 /*
  * Given a menu descriptor, e.g. "File.New", find it in the menu hierarchy.

src/version.c

@@ -766,6 +766,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1571,
 /**/
     1570,
 /**/