patch 9.0.2012: Vim9: error message can be more accurate

Problem:  Vim9: error message can be more accurate
Solution: Fix the error messages

Fix message for some single use error messages.

closes: #13312

Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: Ernie Rael <errael@raelity.com>
diff --git a/src/version.c b/src/version.c
index 441acfd..5b91906 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2012,
+/**/
     2011,
 /**/
     2010,