patch 8.2.4326: "o" and "O" copying comment not sufficiently tested

Problem:    "o" and "O" copying comment not sufficiently tested.
Solution:   Add a test case. (closes #9718)
diff --git a/src/version.c b/src/version.c
index ff7f2f0..82d12a0 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4326,
+/**/
     4325,
 /**/
     4324,