BUG #1644: control structeres perfomance in pgsql

The following bug has been logged online:

Bug reference:      1644
Logged by:          tirny
Email address:      tirny@mail.ru
PostgreSQL version: 7.4.7
Operating system:   FreeBSD 5.3
Description:        control structeres perfomance in pgsql
Details:

for example, look at this code:

any code instructions
***
IF FOUND AND TG_OP = 'UPDATE' THEN
***
END IF;
***

if not found plsql does't break this structure after IF FOUND and proceed
TG_OP = \'UPDATE\', what bring control structures to:
IF FOUND THEN
  IF TG_OP = 'UPDATE' THEN
   ***
  END IF;
END IF;

inconveniently, isn't it?