Make sure 'exchanged' is initialized. Fixes the following warning:

arch/x86/kvm/x86.c: In function 'emulator_cmpxchg_emulated':
arch/x86/kvm/x86.c:3794:7: warning: 'exchanged' may be used uninitialized in 
this function

Signed-off-by: Sasha Levin <[email protected]>
---
 arch/x86/kvm/x86.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index eeeaf2e..9338afc 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -3791,7 +3791,7 @@ static int emulator_cmpxchg_emulated(struct 
x86_emulate_ctxt *ctxt,
        gpa_t gpa;
        struct page *page;
        char *kaddr;
-       bool exchanged;
+       bool exchanged = false;
 
        /* guests cmpxchg8b have to be emulated atomically */
        if (bytes > 8 || (bytes & (bytes - 1)))
-- 
1.7.8

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