W1035 "return value may be undefined" warnings in TStompClientListener

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What steps will reproduce the problem?
1. do a full build

What is the expected output? What do you see instead?
-> I want to see no errors, warnings, hints.
-> I get three W1035 warnings because the IUnknown methods of 
TStompClientListener do not only never assign a retval, but completely lack 
implementation

What version of the product are you using? On what operating system?
-> trunk/head with Delphi XE 

Please provide any additional information below.

Original issue reported on code.google.com by [email protected] on 20 Nov 2013 at 5:43