KVM: x86/xen: Remove unneeded semicolon

The semicolon after the "}" is unneeded.

Signed-off-by: zhang songyi <zhang.songyi@zte.com.cn>
Link: https://lore.kernel.org/r/202212191432274558936@zte.com.cn
Signed-off-by: Sean Christopherson <seanjc@google.com>

tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c

@@ -426,7 +426,7 @@ static void *juggle_shinfo_state(void *arg)
 		__vm_ioctl(vm, KVM_XEN_HVM_SET_ATTR, &cache_init);
 		__vm_ioctl(vm, KVM_XEN_HVM_SET_ATTR, &cache_destroy);
 		pthread_testcancel();
-	};
+	}
 
 	return NULL;
 }