patch 7.4.1037
Problem:    Using "q!" when there is a modified hidden buffer does not unload
            the current buffer, resulting in the need to abandon it again.
Solution:   When using "q!" unload the current buffer when needed. (Yasuhiro
            Matsumoto, Hirohito Higashi)
diff --git a/src/os_unix.c b/src/os_unix.c
index d4a0f6d..3619636 100644
--- a/src/os_unix.c
+++ b/src/os_unix.c
@@ -7132,7 +7132,7 @@
 
     save_cmdmod = cmdmod;
     cmdmod.confirm = TRUE;
-    if (check_changed_any(FALSE))
+    if (check_changed_any(FALSE, FALSE))
 	/* Mustn't logout */
 	cancel_shutdown = True;
     cmdmod = save_cmdmod;