Add undef guards to $stderr in tests

[perl/modules/indirect.git] / t / 30-scope.t

diff --git a/t/30-scope.t b/t/30-scope.t
index 2eceddb401b03cb92981e3763ee0c5d3401515b5..e4d667c33d6ab5fbdc25956ee81142c575fd3c6c 100644 (file)
--- a/t/30-scope.t
+++ b/t/30-scope.t
@@ -21,7 +21,7 @@ use IPC::Cmd qw/run/;
 plan skip_all => "Couldn't capture buffers" if $success and not defined $stderr;
 plan tests => $total + 1;
 
-$stderr = join '', @$stderr;
+$stderr = join '', @{$stderr || []};
 unless ($success) {
  diag $stderr;
  diag "Failed to execute data file (error $err_code)";