Bug 288405: Attachment.cgi fails on Big File attachment inserts - Patch by Marc Schumann <wurblzap@gmail.com> r=joel a=myk

webtools/bugzilla/attachment.cgi

@@ -397,7 +397,7 @@ sub validateData
       }
   }
 
-  return $data;
+  return $data || '';
 }
 
 my $filename;