Fix cpuid KVM crash on i386 (Lubomir Rintel)

Cpuid should return into vec, not overwrite past address in count.
Changeset 6565 broke this.

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6689 c046a42c-6fe2-441c-8c8c-71466251a162
