ps3: Improve a size determination in five functions

[Geoff Levand]

On 12/20/2017 01:20 PM, SF Markus Elfring wrote:
>>  o Your patch fixes no bug nor replaces any depreciated feature.
> 
> How do you think about information from the section “14) Allocating memory”
> in the document “coding-style.rst” for the shown source code transformation?

In terms of importance, I would put maintenance and user support as more
important than coding style.

Regarding Section 14 of coding-style.rst specifically, as I mentioned the
PS3 support is over 10 years old.  I don't expect a change to the type of
any structures.  If there are type changes, then we can update the
allocation size parameters at that time.

-Geoff