patch 8.2.2123: after using a complete popup the buffer is listed

Problem:    After using a complete popup the buffer is listed. (Boris
            Staletic)
Solution:   Make the buffer unlisted.
diff --git a/src/popupmenu.c b/src/popupmenu.c
index f4f210b..c8d305c 100644
--- a/src/popupmenu.c
+++ b/src/popupmenu.c
@@ -858,6 +858,7 @@
 			// Edit a new, empty buffer. Set options for a "wipeout"
 			// buffer.
 			set_option_value((char_u *)"swf", 0L, NULL, OPT_LOCAL);
+			set_option_value((char_u *)"bl", 0L, NULL, OPT_LOCAL);
 			set_option_value((char_u *)"bt", 0L,
 					       (char_u *)"nofile", OPT_LOCAL);
 			set_option_value((char_u *)"bh", 0L,