updated for version 7.4.268
Problem:    Using exists() on a funcref for a script-local function does not
            work.
Solution:   Translate <SNR> to the special byte sequence.  Add a test.
diff --git a/src/version.c b/src/version.c
index 5aae1d2..bd97da3 100644
--- a/src/version.c
+++ b/src/version.c
@@ -735,6 +735,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    268,
+/**/
     267,
 /**/
     266,