[python] Fix two memory leaks

[Phil Muldoon]

Tom Tromey wrote:
>>>>>> "Phil" == Phil Muldoon <pmuldoon@redhat.com> writes:
>>>>>>             
>
> Phil> The unicode_decref patch changes the:
> Phil> "python-utils.c/python_string_to_unicode" function to always return a
> Phil> new reference.
>
> Could you submit this to gdb-patches?  This utility code is already
> there, so the fix needs to be as well.  Thanks.
>   


Done. I also committed this to the archer-tromey-python branch. The 
commit is:

b5235efef9aa1d619d8a5defc5aa1219dff76d3d

We should revert it should we merge master -> archer-tromey-python after 
this particular fix has been accepted and committed upstream.

> Phil> The second patch is a straightforward addition of a variable
> Phil> dereference inside the function:
> Phil> "python.c/apply_val_pretty_printer". This value object was never being
> Phil> dereferenced.
>
> This is ok, thanks

Committed.

Regards

Phil