patch 8.1.1868: multi-byte chars in 'listchars' fail with 'linebreak' set

Problem:    Multibyte characters in 'listchars' don't work correctly if
            'linebreak' is also enabled. (Martin Tournoij)
Solution:   Make it work correctly. (Christian Brabandt, closes #4822,
            closes #4812)
diff --git a/src/version.c b/src/version.c
index a885d9e..0a36e0a 100644
--- a/src/version.c
+++ b/src/version.c
@@ -770,6 +770,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1868,
+/**/
     1867,
 /**/
     1866,