readahead: fix fd validity check

https://bugzilla.redhat.com/show_bug.cgi?id=868603

diff --git a/src/readahead/readahead-collect.c b/src/readahead/readahead-collect.c
index a3f7df5f6ae6ac91ffdc0a4e061890e429151c8e..5d07f4704af0837a588d0cc1c5293e4ac72b4e3f 100644 (file)
--- a/src/readahead/readahead-collect.c
+++ b/src/readahead/readahead-collect.c
@@ -460,7 +460,7 @@ static int collect(const char *root) {
                                 log_warning("readlink(%s) failed: %s", fn, strerror(-k));
 
                 next_iteration:
-                        if (m->fd)
+                        if (m->fd >= 0)
                                 close_nointr_nofail(m->fd);
                 }
         }