[gucharmap] gen-guch-unicode-tables.pl: Don't hardcode the path of perl

[Ting-Wei Lan <lantw src gnome org>]

commit 218b4587c9ca47c2c90ffee57a9b2eacfb66382f
Author: Ting-Wei Lan <lantw src gnome org>
Date:   Mon Apr 25 03:52:45 2016 +0800

    gen-guch-unicode-tables.pl: Don't hardcode the path of perl
    
    https://bugzilla.gnome.org/show_bug.cgi?id=765631

 gucharmap/gen-guch-unicode-tables.pl |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/gucharmap/gen-guch-unicode-tables.pl b/gucharmap/gen-guch-unicode-tables.pl
index 84d7042..fa1917d 100755
--- a/gucharmap/gen-guch-unicode-tables.pl
+++ b/gucharmap/gen-guch-unicode-tables.pl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl -w
+#!/usr/bin/env perl
 #
 # $Id$ 
 #
@@ -17,6 +17,7 @@
 # NOTE! Some code copied from glib/glib/gen-unicode-tables.pl; keep in sync!
 
 use strict;
+use warnings;
 
 use Env qw($PROG_UNZIP);
 $PROG_UNZIP = "unzip" unless (defined $PROG_UNZIP);