patch 8.1.0012: misplaced #endif

Problem:    Misplaced #endif.
Solution:   Move the #endif to after the expression. (David Binderman)
diff --git a/src/version.c b/src/version.c
index 3ebeb77..6dfc3aa 100644
--- a/src/version.c
+++ b/src/version.c
@@ -762,6 +762,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    12,
+/**/
     11,
 /**/
     10,