patch 7.4.853

Problem:    "zt" in diff mode does not always work properly. (Gary Johnson)
Solution:   Don't count filler lines twice. (Christian Brabandt)

src/version.c

@@ -741,6 +741,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    853,
 /**/
     852,
 /**/