bootstrap broken

[Kazu Hirata]

Hi Andreas,

> /cvs/gcc-svn/trunk/gcc/df-core.c: In function ‘df_compact_blocks’:
> /cvs/gcc-svn/trunk/gcc/df-core.c:795: error: invalid lvalue in assignment
> /cvs/gcc-svn/trunk/gcc/df-core.c:803: error: invalid lvalue in assignment
> /cvs/gcc-svn/trunk/gcc/df-core.c: In function ‘df_bb_replace’:
> /cvs/gcc-svn/trunk/gcc/df-core.c:833: error: invalid lvalue in assignment

I just fixed these.

Kazu Hirata