patch 8.2.4543: Coverity warning for refactored tag search code

Problem:    Coverity warning for refactored tag search code.
Solution:   Avoid the warnings.  Update comments.  Add one more test case.
            (Yegappan Lakshmanan, closes #9928)
diff --git a/src/version.c b/src/version.c
index 56f365a..4dea68d 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4543,
+/**/
     4542,
 /**/
     4541,