strict type fix

nette · Apr 26, 2018 · 5c9a117 · 5c9a117
1 parent 02d0864
commit 5c9a117
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/src/Mail/SmtpMailer.php b/src/Mail/SmtpMailer.php
@@ -93,8 +93,9 @@ public function send(Message $mail): void
 				$this->connect();
 			}
 
-			if (($from = $mail->getHeader('Return-Path'))
-				|| ($from = key($mail->getHeader('From')))
+			if (
+				($from = $mail->getHeader('Return-Path'))
+				|| ($from = array_keys((array) $mail->getHeader('From'))[0])
 			) {
 				$this->write("MAIL FROM:<$from>", 250);
 			}