[PATCH v2] gdb/hppa-tdep.c: Fix logical working flow typo issue

[Joel Brobecker]

> After consult parisc kernel members, I found the related document for
> it, I guess, it can be as our proof for this patch:
> 
>   https://parisc.wiki.kernel.org/images-parisc/7/73/Parisc2.0.pdf
> 
> For me, my original comments need be improved: need mention about STH,
> and maybe also need consider about additional related instructions of
> parisc 2.0 (STDA, STWA, STBY, STDBY) in our source code.
> 
> Welcome any suggestions, ideas, and completions.

OK - please send us an updated patch, and we will review.

Thank you,
-- 
Joel