patch 8.1.0874: using old style comments in new file

Problem:    Using old style comments in new file.
Solution:   Convert to // comments in new file. (Yegappan Lakshmanan)
diff --git a/src/version.c b/src/version.c
index 888bc25..24a9fb3 100644
--- a/src/version.c
+++ b/src/version.c
@@ -784,6 +784,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    874,
+/**/
     873,
 /**/
     872,