patch 7.4.2272
Problem:    getbufinfo(), getwininfo() and gettabinfo() are inefficient.
Solution:   Instead of making a copy of the variables dictionary, use a
            reference.
diff --git a/src/version.c b/src/version.c
index 2384d4d..8f435db 100644
--- a/src/version.c
+++ b/src/version.c
@@ -764,6 +764,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2272,
+/**/
     2271,
 /**/
     2270,