Don't work correct with Yahoo protocol

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What steps will reproduce the problem?
1. Chat using Yahoo account with another Yahoo contact.
2. Try to create secured connection (RSA/AES).

What is the expected output? What do you see instead?
With other protocols (that shows that there is Miranda on other side) 
secured connection created, with Yahoo protocol didn't.

What version of the product are you using? On what operating system?
Miranda v0.9.0 test build #1; cryptopp.dll v1.0.4.3; secureim.dll 
v1.0.12.3.

Please provide any additional information below.
On older versions of secureim.dll (for example v1.0.10.9) there wasn't his 
trouble.

Original issue reported on code.google.com by 2.Basile@gmail.com on 15 Aug 2009 at 3:02