close trace file when done with it, so unlink works on windows

diff --git a/t/trace.t b/t/trace.t
index 0021597..133c8b0 100755 (executable)
--- a/t/trace.t
+++ b/t/trace.t
@@ -20,6 +20,7 @@ sub test_trace {
 
   open my $trace, "<", "fatpacker.trace";
   my @traced = sort map { chomp; $_ } <$trace>;
+  close $trace;
 
   is_deeply \@traced, \@loaded, "All expected modules loaded for $file";
   unlink "fatpacker.trace";