patch 8.2.3016: confusing error when expression is followed by comma

Problem:    Confusing error when expression is followed by comma.
Solution:   Give a different error for trailing text. (closes #8395)
diff --git a/src/version.c b/src/version.c
index 4f33d35..a03b3fe 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3016,
+/**/
     3015,
 /**/
     3014,