patch 7.4.1938
Problem:    When writing viminfo numbered marks were duplicated.
Solution:   Check for duplicates between current numbered marks and the ones
            read from viminfo.
diff --git a/src/version.c b/src/version.c
index 2cdd142..1a2b1f3 100644
--- a/src/version.c
+++ b/src/version.c
@@ -754,6 +754,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1938,
+/**/
     1937,
 /**/
     1936,