build problem in glibc cvs

[Roland McGrath]

> Ulrich,
>    Roland already added '#include <stdlib.h> to stdio-common/reg-printf.c
> this weekend to fix this. So now we need to either remove the include
> of stdlib.h or stddef.h. I would assume we should remove the stdlib.h
> include since stddef.h drags in less.

stdlib.h was appropriate because of the use of malloc, which is why I did
it.  Having stddef.h as well is harmless though superfluous.  It's probably
my fault for not posting that I had fixed it, figuring Uli would just notice.