spamassassin: Fix "Insecure dependency" error from ClamAV plugin.

spamassassin/files/ClamAV.pm

@@ -78,7 +78,7 @@ sub check_clamav {
 
     my $socket = IO::Socket::UNIX->new(
 	Type => SOCK_STREAM,
-	Peer => $self->{main}->{conf}->{clamav_socket}
+	Peer => Mail::SpamAssassin::Util::untaint_file_path($permsg->{conf}->{clamav_socket})
         ) or do {
             $permsg->set_tag("CLAMAV", "Error");
             info("ClamAV: Failed to connect socket, skipping virus check");