atomic: fix position of volatile qualifier
What needs to be volatile is not the pointer, but the pointed-to value! Cc: qemu-stable@nongnu.org Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com> (cherry picked from commit 2cbcfb28) Signed-off-by: NMichael Roth <mdroth@linux.vnet.ibm.com>
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