patch 9.1.0039: too vague errors for 'listchars'/'fillchars'

Problem:  too vague errors for 'listchars'/'fillchars'
Solution: Include the field name in error message.
          (zeertzjq)

related: neovim/neovim#27050
closes: #13877

Co-authored-by: Cole Frankenhoff <cole.nhf@gmail.com>
Signed-off-by: zeertzjq <zeertzjq@outlook.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index 90b615e..e3272f1 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    39,
+/**/
     38,
 /**/
     37,