patch 8.2.2871: unnessary VIM_ISDIGIT() calls, badly indented code

Problem:    Unnessary VIM_ISDIGIT() calls, badly indented code.
Solution:   Call skipdigits() on the next character.  Improve indenting.
            (Dominique Pellé, closes #8227)

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2871,
 /**/
     2870,
 /**/