updated for version 7.4.308
Problem:    When using ":diffsplit" on an empty file the cursor is displayed
            on the command line.
Solution:   Limit the value of w_topfill.
diff --git a/src/diff.c b/src/diff.c
index 49ca58a..98b791a 100644
--- a/src/diff.c
+++ b/src/diff.c
@@ -622,6 +622,7 @@
 		    wp->w_topfill = (n < 0 ? 0 : n);
 		else if (n > 0 && n > wp->w_topfill)
 		    wp->w_topfill = n;
+		check_topfill(wp, FALSE);
 	    }
 	}
 }
diff --git a/src/version.c b/src/version.c
index 41f1b46..f72ae97 100644
--- a/src/version.c
+++ b/src/version.c
@@ -735,6 +735,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    308,
+/**/
     307,
 /**/
     306,