patch 7.4.1884
Problem:    Updating marks in a quickfix list is very slow when the list is
            long.
Solution:   Only update marks if the buffer has a quickfix entry.
diff --git a/src/version.c b/src/version.c
index 6278002..0f9e840 100644
--- a/src/version.c
+++ b/src/version.c
@@ -754,6 +754,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1884,
+/**/
     1883,
 /**/
     1882,