patch 8.0.0261: not enough test coverage for eval functions

Problem:    Not enough test coverage for eval functions.
Solution:   Add more tests. (Dominique Pelle, closes #1420)
diff --git a/src/version.c b/src/version.c
index db2b53b..6ef16e4 100644
--- a/src/version.c
+++ b/src/version.c
@@ -765,6 +765,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    261,
+/**/
     260,
 /**/
     259,