malloc(0) fails in u9fs

I run u9fs on Tru64 UNIX but it gives `malloc(0) fails'.
I added the following fragment in emalloc() in u9fs.c.
I agree it could be an extremely nasty work-around.

/sys/src/cmd/unix/u9fs/u9fs.c:/^emalloc
        void *p;

>       if (n == 0)
>               n = 1;
        p = malloc(n);
        if(p == 0)


(I used bundled CC, not GCC.)
-- 
YAMANASHI Takeshi