From feceb0bda28cea09e43b9497e38510ef404d5c4a Mon Sep 17 00:00:00 2001
From: Dirk Koopman <djk@tobit.co.uk>
Date: Tue, 27 Jan 2015 11:49:21 +0000
Subject: [PATCH] restore data saving

---
 loop.pl | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/loop.pl b/loop.pl
index 1fb8998..bb28f18 100755
--- a/loop.pl
+++ b/loop.pl
@@ -157,6 +157,8 @@ dbg "after app start";
 
 write_ld();
 $dataf->close if $dataf;
+undef $dataf;
+
 
 # move all the files along one 
 cycle_loop_data_files();
@@ -534,7 +536,7 @@ sub gen_hash_diff
 	my $count;
 
 	while (my ($k, $v) = each %$now) {
-		if ($last->{$k} ne $now->{$k}) {
+		if (!exists $last->{$k} || $last->{$k} ne $now->{$k}) {
 			$o{$k} = $v;
 			++$count;
 		}
@@ -698,6 +700,7 @@ sub write_ld
 sub cycle_loop_data_files
 {
 	$dataf->close if $dataf;
+	undef $dataf;
 	
 	rename "$datafn.oooo", "$datafn.ooooo";
 	rename "$datafn.ooo", "$datafn.oooo";
-- 
2.34.1