daemon: unlink .oldbin PID file correctly

We need to track the PID file having ".oldbin" appended
to it while a SIGUSR2 upgrade is in progress and ensure
it is unlinked on SIGQUIT.

1 files changed, 1 insertions, 0 deletions

diff --git a/t/httpd-unix.t b/t/httpd-unix.t
index 02f5e4a9..a0fe1e31 100644
--- a/t/httpd-unix.t
+++ b/t/httpd-unix.t
@@ -163,6 +163,7 @@ SKIP: {
         # drop the old parent
         kill('QUIT', $old_pid) or die "QUIT failed: $!";
         delay_until(sub { !kill(0, $old_pid) });
+        ok(!-f "$pid_file.oldbin", '.oldbin PID file gone');
 
         # drop the new child
         check_sock($unix);