patch 8.2.3398: html text objects are not fully tested

Problem:    Html text objects are not fully tested.
Solution:   Add tests for dbcs encoding and different number of backslashes.
            (Dominique Pellé, closes #8831)
diff --git a/src/version.c b/src/version.c
index 8aaf163..732ddee 100644
--- a/src/version.c
+++ b/src/version.c
@@ -756,6 +756,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3398,
+/**/
     3397,
 /**/
     3396,