patch 8.1.0599: without the +eval feature the indent tests don't work

Problem:    Without the +eval feature the indent tests don't work.
Solution:   Skip the body of the tests.
diff --git a/src/version.c b/src/version.c
index 7e8b34e..0231cc8 100644
--- a/src/version.c
+++ b/src/version.c
@@ -800,6 +800,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    599,
+/**/
     598,
 /**/
     597,