9pnet: refactor struct p9_fcall alloc code
9pnet: refactor struct p9_fcall alloc code

Signed-off-by: Simon Derr <9dcfabcf9f6cae951ec1a9646d6f588aabb58d1b@bull.net>
Signed-off-by: Eric Van Hensbergen <f6aaec02cb2023b586fda1596c965a5752b892b4@gmail.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs