blame: default to HEAD in a bare repo when no start commit is given

diff --git a/t/t5562/invoke-with-content-length.pl b/t/t5562/invoke-with-content-length.pl
old mode 100755 (executable)
new mode 100644 (file)
index 6c2aae7..0943474
--- a/t/t5562/invoke-with-content-length.pl
+++ b/t/t5562/invoke-with-content-length.pl
@@ -1,4 +1,3 @@
-#!/usr/bin/perl
 use 5.008;
 use strict;
 use warnings;