contrib/diff-highlight: stop hard-coding perl location

From: Peter Dave Hello <hsu@peterdavehello.org>
Date: Feb 22, 2016, 05:54 UTC
Message-ID: <CA+boQ6YWWkudgwC7zn-3UPWqfkw+uJZgwcBWcGvJDcCUakjzHA@mail.gmail.com>

From: Peter Dave Hello <hsu@peterdavehello.org>

Use `#!/usr/bin/env perl` instead of `#!/usr/bin/perl`, the util "env" can help located the "perl", so that it can work on FreeBSD and other platforms.

Signed-off-by: Peter Dave Hello <hsu@peterdavehello.org>
---
 contrib/diff-highlight/diff-highlight | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/contrib/diff-highlight/diff-highlight
b/contrib/diff-highlight/diff-highlight
index ffefc31..b57b0fd 100755
--- a/contrib/diff-highlight/diff-highlight
+++ b/contrib/diff-highlight/diff-highlight
@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl

 use 5.008;
 use warnings FATAL => 'all';

--