patch 7.4.1871
Problem:    Appending to the quickfix list while the quickfix window is open
            is very slow.
Solution:   Do not delete all the lines, only append the new ones.  Avoid
            using a window while updating the list. (closes #841)
diff --git a/src/version.c b/src/version.c
index a7af566..3340537 100644
--- a/src/version.c
+++ b/src/version.c
@@ -754,6 +754,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1871,
+/**/
     1870,
 /**/
     1869,