patch 8.2.0580: window size wrong if 'ea' is off and 'splitright' is on

Problem:    Window size wrong if 'ea' is off and 'splitright' is on and
            splitting then closing a window.
Solution:   Put abandoned window space in the right place. (Mark Waggoner)

src/version.c

@@ -746,6 +746,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    580,
 /**/
     579,
 /**/