patch 8.2.1713: Motif GUI: crash when setting menu colors

Problem:    Motif GUI: crash when setting menu colors. (Andrzej Bylicki)
Solution:   Add {} to make "n" incremented correctly. (closes #6989,
            closes #5948)

src/gui_motif.c

@@ -916,9 +916,13 @@ gui_mch_add_menu(vimmenu_T *menu, int idx)
 # endif
 	{
 	    if (gui.menu_bg_pixel != INVALCOLOR)
+	    {
 		XtSetArg(arg[0], XmNbackground, gui.menu_bg_pixel); n++;
+	    }
 	    if (gui.menu_fg_pixel != INVALCOLOR)
+	    {
 		XtSetArg(arg[1], XmNforeground, gui.menu_fg_pixel); n++;
+	    }
 	    menu->submenu_id = XmCreatePopupMenu(textArea, "contextMenu",
 								      arg, n);
 	    menu->id = (Widget)0;

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1713,
 /**/
     1712,
 /**/