[tools] testbot/Engine: Fix attachment support in HandleWinePatchMLSubmission().

[Francois Gouget]

By default MIME:Parser::Filer uses the attachement's recommended
filename to save it to disk. However that name is tainted which causes
Perl to throw an exception.
Since we don't actually care about the filename (all mailing list
patches are called 'patch.diff'), simply tell the filer to generate
its own filename.

Signed-off-by: Francois Gouget <fgouget(a)codeweavers.com>
---

The only reason this has not impacted the official TestBot so far is 
that the mailing list patches go through the patches website which 
(mis)handles the attachments (bug 48795) and then 
WinePatchesWebSubmit.pl, instead of going straight in through 
WinePatchesMLSubmit.pl.

 testbot/bin/Engine.pl | 1 +
 1 file changed, 1 insertion(+)

diff --git a/testbot/bin/Engine.pl b/testbot/bin/Engine.pl
index 48bb797cc0..db9d82d300 100755
--- a/testbot/bin/Engine.pl
+++ b/testbot/bin/Engine.pl
@@ -428,6 +428,7 @@ sub HandleWinePatchMLSubmission()
     # Process the email
     my $Parser = new MIME::Parser;
     $Parser->output_dir($WorkDir);
+    $Parser->filer->ignore_filename(1);
     my $Entity = $Parser->parse_open($FullMessageFileName);
     my $ErrMessage = CreatePatches()->NewPatch($Entity);
     if (defined $ErrMessage)
-- 
2.20.1