patch 9.0.0846: using assert_fails() may cause hit-enter prompt

Problem:    Using assert_fails() may cause hit-enter prompt.
Solution:   Set no_wait_return. (closes #11522)
diff --git a/src/version.c b/src/version.c
index 097fcf6..f305f3c 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    846,
+/**/
     845,
 /**/
     844,