fix for df.c (was: Partial merge from new-regalloc-branch to HEAD)

[Daniel Egger]

Am Son, 2002-06-23 um 00.48 schrieb Michael Matz:

> This would have fixed the potential problem.  But I believe the patch I
> attached last time is better.  At the time of the calls we know exactly
> how large the table must be (at least).

Please comment it appropriatly then. Many people might be confused by
the twice occuring block and might try to remove one without seeing what
happens exactly.

-- 
Servus,
       Daniel