[PATCH 05/10] t/lei-watch: avoid race between glob + readlink

[Eric Wong <e@80x24.org>]

Open file handles in lei-daemon may be unstable so we need to
account for readlink() returning undef.
---
 t/lei-watch.t | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/t/lei-watch.t b/t/lei-watch.t
index 86fa6649..a881fbb9 100644
--- a/t/lei-watch.t
+++ b/t/lei-watch.t
@@ -25,7 +25,7 @@ test_lei(sub {
 		lei_ok 'daemon-pid'; chomp(my $pid = $lei_out);
 		skip 'missing /proc/$PID/fd', 1 if !-d "/proc/$pid/fd";
 		my @ino = grep {
-			readlink($_) =~ /\binotify\b/
+			(readlink($_) // '') =~ /\binotify\b/
 		} glob("/proc/$pid/fd/*");
 		is(scalar(@ino), 1, 'only one inotify FD');
 		my $ino_fd = (split('/', $ino[0]))[-1];