patch 8.2.3588: break statement is never reached

Problem:    Break statement is never reached.
Solution:   Rely on return value of set_chars_option() not changing.
            (closes #9103)
diff --git a/src/version.c b/src/version.c
index 65d9d10..4be3fd2 100644
--- a/src/version.c
+++ b/src/version.c
@@ -758,6 +758,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3588,
+/**/
     3587,
 /**/
     3586,