patch 8.2.1011: Vim9: some code not tested

Problem:    Vim9: some code not tested.
Solution:   Add a few more test cases.  Reorder checks for clearer error.
            Remove unreachable code.
diff --git a/src/version.c b/src/version.c
index f1e274a..cc580fb 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1011,
+/**/
     1010,
 /**/
     1009,