sendmail helper: allow empty display name in from

This patch enables the sendmail helper sub to send emails with a non-existant
display name in the from address. This is used to replace the direct call to
the sendmail binary in pve-manager/PVE/API2/APT.pm.

Signed-off-by: Stoiko Ivanov <s.ivanov@proxmox.com>

diff --git a/src/PVE/Tools.pm b/src/PVE/Tools.pm
index 3b5b199805a5b88dd24419daaf441dacfc4d6e76..e04b504617388fdc5b7f4b8b086df48af7d2a141 100644 (file)
--- a/src/PVE/Tools.pm
+++ b/src/PVE/Tools.pm
@@ -1457,7 +1457,7 @@ sub sendmail {
     die "illegal character in mailfrom address\n"
        if $mailfrom =~ $mail_re;
 
-    $author = $author || 'Proxmox VE';
+    $author = $author // 'Proxmox VE';
 
     open (MAIL, "|-", "sendmail", "-B", "8BITMIME", "-f", $mailfrom, "--", @$mailto) ||
        die "unable to open 'sendmail' - $!";