patch 8.2.2459: Coverity reports dead code

Problem:    Coverity reports dead code.
Solution:   Remove the dead code.

src/eval.c

@@ -4077,8 +4077,6 @@ eval_index_inner(
 			n2 = len + n2;
 		    else if (n2 >= len)
 			n2 = len;
-		    if (exclusive)
-			--n2;
 		    if (n1 >= len || n2 < 0 || n1 > n2)
 			s = NULL;
 		    else

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2459,
 /**/
     2458,
 /**/