patch 9.0.1468: recursively calling :defer function if it does :qa

Problem:    Recursively calling :defer function if it does :qa in a compiled
            function.
Solution:   Clear the defer entry before calling the function. (closes #12271)
diff --git a/src/version.c b/src/version.c
index bff52cc..6ff6bf6 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1468,
+/**/
     1467,
 /**/
     1466,