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-rw-r--r--lib/DBInfoscreen/Controller/Map.pm2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/DBInfoscreen/Controller/Map.pm b/lib/DBInfoscreen/Controller/Map.pm
index 7013b63..7b5a49b 100644
--- a/lib/DBInfoscreen/Controller/Map.pm
+++ b/lib/DBInfoscreen/Controller/Map.pm
@@ -123,7 +123,7 @@ sub estimate_train_positions {
last;
}
}
- if ( $from_index and $to_index ) {
+ if ( defined $from_index and defined $to_index ) {
my $total_distance = 0;
for my $j ( $from_index + 1 .. $to_index ) {
my $prev = $features->[ $j - 1 ]{geometry}{coordinates};