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-rw-r--r--FS/FS/password_history.pm1
1 files changed, 1 insertions, 0 deletions
diff --git a/FS/FS/password_history.pm b/FS/FS/password_history.pm
index 13d1601..1915a21 100644
--- a/FS/FS/password_history.pm
+++ b/FS/FS/password_history.pm
@@ -173,6 +173,7 @@ sub _upgrade_schema {
push @where, "
( $fk IS NOT NULL AND NOT EXISTS(SELECT 1 FROM $table WHERE $table.$key = $fk) )";
}
+ return '' unless @where;
my @recs = qsearch({
'table' => 'password_history',
'extra_sql' => ' WHERE ' . join(' AND ', @where),