patch 8.1.0901: index in getjumplist() may be wrong

Problem:    Index in getjumplist() may be wrong. (Epheien)
Solution:   Call cleanup_jumplist() earlier. (Yegappan Lakshmanan,
            closes #3941)

src/version.c

@@ -783,6 +783,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    901,
 /**/
     900,
 /**/