patch 8.2.0998: not all tag code is tested

Problem:    Not all tag code is tested.
Solution:   Add a few more test cases. (Yegappan Lakshmanan, closes #6284)
diff --git a/src/version.c b/src/version.c
index 25ada8c..6ea3ce0 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    998,
+/**/
     997,
 /**/
     996,