patch 8.0.0404: not enough testing for quickfix

Problem:    Not enough testing for quickfix.
Solution:   Add some more tests. (Yegappan Lakshmanan)
diff --git a/src/version.c b/src/version.c
index bef8df2..71d22de 100644
--- a/src/version.c
+++ b/src/version.c
@@ -765,6 +765,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    404,
+/**/
     403,
 /**/
     402,