wininet: Don't add the user agent header until HttpSendRequest is called.

[Hans Leidekker]

Fixes http://bugs.winehq.org/show_bug.cgi?id=3426

 -Hans

Changelog
 Don't add the user agent header until HttpSendRequest is called.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: wininet_user_agent.diff
Type: text/x-diff
Size: 4988 bytes
Desc: not available
Url : http://www.winehq.org/pipermail/wine-patches/attachments/20080502/e2c02666/attachment.diff