patch 8.0.0804: running tests fails when stdin is /dev/null

Problem:    Running tests fails when stdin is /dev/null. (James McCoy)
Solution:   Do not bail out from getting input if the --not-a-term argument
            was given. (closes #1460)
diff --git a/src/version.c b/src/version.c
index 86e8cc6..0648dd6 100644
--- a/src/version.c
+++ b/src/version.c
@@ -770,6 +770,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    804,
+/**/
     803,
 /**/
     802,