patch 8.2.4908: no text formatting for // comment after a statement

Problem:    No text formatting for // comment after a statement.
Solution:   format a comment when the 'c' flag is in 'formatoptions'.
diff --git a/src/version.c b/src/version.c
index f53be12..1eb14d0 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4908,
+/**/
     4907,
 /**/
     4906,