patch 8.1.1490: when a single test fails the exit code is not set

Problem:    When a single test fails the exit code is not set. (Daniel Hahler)
Solution:   Add an exit command. (closes #4506)
diff --git a/src/version.c b/src/version.c
index f63c5f3..75ebdc1 100644
--- a/src/version.c
+++ b/src/version.c
@@ -768,6 +768,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1490,
+/**/
     1489,
 /**/
     1488,