patch 8.2.0597: test_eval is old style

Problem:    Test_eval is old style.
Solution:   Change some tests to a new style test.
diff --git a/src/version.c b/src/version.c
index bac1ac3..075f4db 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    597,
+/**/
     596,
 /**/
     595,