Local variable CPUClass *cc needs to be reloaded after return from longjmp,
too.  (This fixes a mips-softmmu crash observed on FreeBSD when QEMU is
built with clang.)
Reported-by: NDimitry Andric <dim@FreeBSD.org>
Signed-off-by: NJuergen Lock <nox@jelal.kn-bremen.de>
Signed-off-by: NAndreas Färber <afaerber@suse.de>