patch 7.4.2272

Problem:    getbufinfo(), getwininfo() and gettabinfo() are inefficient.
Solution:   Instead of making a copy of the variables dictionary, use a
            reference.

src/version.c

@@ -763,6 +763,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2272,
 /**/
     2271,
 /**/