print_property_string: skip undefined values

diff --git a/src/PVE/JSONSchema.pm b/src/PVE/JSONSchema.pm
index de2a0bd993957343e4366a2e41fc5be485b98dab..e83d8dea42a3797bc610530bea86f3aca6a6f5ea 100644 (file)
--- a/src/PVE/JSONSchema.pm
+++ b/src/PVE/JSONSchema.pm
@@ -588,6 +588,7 @@ sub print_property_string {
 
        my $typeformat = $format->{$key}->{format};
        my $value = $data->{$key};
 
        my $typeformat = $format->{$key}->{format};
        my $value = $data->{$key};

+       next if !defined($value);

        $text .= $comma;
        $comma = ',';
        if ($typeformat && $typeformat eq 'disk-size') {
        $text .= $comma;
        $comma = ',';
        if ($typeformat && $typeformat eq 'disk-size') {