[Bug 39789] New: Reusing xmlhttprequest doesn't clear previous headers

https://bugs.winehq.org/show_bug.cgi?id=39789

Bug ID: 39789
           Summary: Reusing xmlhttprequest doesn't clear previous headers
           Product: Wine
           Version: 1.8-rc4
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: minor
          Priority: P2
         Component: msxml3
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 53084
  --> https://bugs.winehq.org/attachment.cgi?id=53084
Test+source

1. Add header (for example SetRequestHeader('winetest', 'test')) and send.

2. Use same object to make other requests, but not setting this header.

-> "winetest" header is still included.

This was causing errors, server got headers it wasn't supposed to..

Just run attached sample, workaround winetricks msxml3