crypt32: Use CryptSIPRetrieveSubjectGuid to determine how to read a message object from a file, rather than assuming the source file is always a PE executable

[Juan Lang]

This gets the Silverlight installer one crash further, see bug 11759.
--Juan
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 0001-Use-CryptSIPRetrieveSubjectGuid-to-determine-how-to.patch
Type: text/x-patch
Size: 4573 bytes
Desc: not available
Url : http://www.winehq.org/pipermail/wine-patches/attachments/20080804/5f5cb987/attachment.bin