do not check pointers after dereferencing them
Two instances, both spotted by Coverity. In one, two blocks were swapped. In the other, the check is not needed anymore. Cc: qemu-stable@nongnu.org Cc: qemu-trivial@nongnu.org Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com> Signed-off-by: NMichael Tokarev <mjt@tls.msk.ru>
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