updated for version 7.3.631
Problem:    Cannot complete user names.
Solution:   Add user name completion.  (Dominique Pelle)
diff --git a/src/misc2.c b/src/misc2.c
index 5d60954..43fec19 100644
--- a/src/misc2.c
+++ b/src/misc2.c
@@ -1110,6 +1110,9 @@
     free_all_marks();
     alist_clear(&global_alist);
     free_homedir();
+# if defined(FEAT_CMDL_COMPL)
+    free_users();
+# endif
     free_search_patterns();
     free_old_sub();
     free_last_insert();