BUG #10989: log_statement = ddl does not log ddl statements from stored functions

The following bug has been logged on the website:

Bug reference:      10989
Logged by:          Sergey Burladyan
Email address:      eshkinkot@gmail.com
PostgreSQL version: 9.3.4
Operating system:   Debian testing
Description:

If I run DROP directly, it logged:
drop view test_view ;
2014-07-18 16:20:51 MSK LOG:  statement: drop view test_view ;

but this query is not:
do $$ begin execute 'drop view test_view'; end $$;