patch 8.2.3831: opfunc test fails when missing feature changes function name

Problem:    Opfunc test fails when missing feature changes function name.
            (Dominique Pellé)
Solution:   Check the relevant screen line instead of using a screendump.
            (closes #9360)
diff --git a/src/version.c b/src/version.c
index 87b82ac..e908b63 100644
--- a/src/version.c
+++ b/src/version.c
@@ -750,6 +750,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3831,
+/**/
     3830,
 /**/
     3829,