33_readingsHistory.pm: fixed uninitialized value warning

git-svn-id: https://svn.fhem.de/fhem/trunk@8951 2b470e98-0d58-463d-a4d8-8e2adae1ed80
2015-07-12 21:45:34 +00:00
parent 2b4735bd59
commit cae8e09ca5
1 changed files with 2 additions and 0 deletions
--- a/fhem/FHEM/33_readingsHistory.pm
+++ b/fhem/FHEM/33_readingsHistory.pm
@@ -227,6 +227,8 @@ readingsHistory_lookup2($$$$)
    $lookup = $vf;
  }

+  return $lookup if( !defined($lookup) );
+
  if( !ref($lookup) && $lookup =~ m/^{.*}$/) {
    my $DEVICE = $name;
    my $READING = $reading;