diff options
Diffstat (limited to 'swiftmailer/swiftmailer/lib/classes/Swift/Signers/OpenDKIMSigner.php')
| -rw-r--r-- | swiftmailer/swiftmailer/lib/classes/Swift/Signers/OpenDKIMSigner.php | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/swiftmailer/swiftmailer/lib/classes/Swift/Signers/OpenDKIMSigner.php b/swiftmailer/swiftmailer/lib/classes/Swift/Signers/OpenDKIMSigner.php index 6d7b589c..520bcc15 100644 --- a/swiftmailer/swiftmailer/lib/classes/Swift/Signers/OpenDKIMSigner.php +++ b/swiftmailer/swiftmailer/lib/classes/Swift/Signers/OpenDKIMSigner.php @@ -75,7 +75,7 @@ class Swift_Signers_OpenDKIMSigner extends Swift_Signers_DKIMSigner $listHeaders = $headers->listAll(); foreach ($listHeaders as $hName) { // Check if we need to ignore Header - if (!isset($this->ignoredHeaders[strtolower($hName)])) { + if (!isset($this->ignoredHeaders[strtolower($hName ?? '')])) { $tmp = $headers->getAll($hName); if ($headers->has($hName)) { foreach ($tmp as $header) { |