don't die without any hosts

diff --git a/bin/BackupPC_ASA_PostArchive_Update b/bin/BackupPC_ASA_PostArchive_Update
index 0b3eff9..757c93d 100755 (executable)
--- a/bin/BackupPC_ASA_PostArchive_Update
+++ b/bin/BackupPC_ASA_PostArchive_Update
@@ -403,6 +403,8 @@ sub check_archive {
 
 #----- main
 
+exit unless $opt->host;
+
 foreach ( 0 .. $#{ $opt->host } ) {
 
        my $host = lc $opt->host->[$_];