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authorDaniel Friesel <derf@finalrewind.org>2022-06-14 22:24:50 +0200
committerDaniel Friesel <derf@finalrewind.org>2022-06-14 22:24:50 +0200
commita7b8e7516be325265dce7300b17359d15a1715e0 (patch)
tree2a6620488a375c62f87d59a73532a9fa4f7059de
parente2753e2a9604e9687e1ba8dda26174cc013d75c8 (diff)
correctly initialize ice_type_map hash4.9.5
This ensures proper operation when the zugbildungsplan is empty, e.g. because the underlying source file has become invalid. Closes #14
-rw-r--r--lib/DBInfoscreen.pm2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/DBInfoscreen.pm b/lib/DBInfoscreen.pm
index 7730f90..53944fd 100644
--- a/lib/DBInfoscreen.pm
+++ b/lib/DBInfoscreen.pm
@@ -94,7 +94,7 @@ sub startup {
if ( -r 'share/zugbildungsplan.json' ) {
my $ice_type_map = JSON->new->utf8->decode(
scalar read_file('share/zugbildungsplan.json') );
- my $ret;
+ my $ret = {};
while ( my ( $k, $v ) = each %{ $ice_type_map->{train} } ) {
if ( $v->{type} ) {
$ret->{$k} = [