[PATCH] Fix erroneous double negation in conditional

[Raphael Norwitz <raphael.s.norwitz@gmail.com>]

In vhost_migration_log() there is the following check:
    if(!!enable == dev->log_enabled) {
        return 0;
    }

The double negative “!!” is unnecessary and bad coding style. This
change removes it.

Signed-off-by: Raphael Norwitz <raphael.norwitz@nutanix.com>
---
 hw/virtio/vhost.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c
index aff98a0..83be0c8 100644
--- a/hw/virtio/vhost.c
+++ b/hw/virtio/vhost.c
@@ -814,7 +814,7 @@ static int vhost_migration_log(MemoryListener
*listener, int enable)
     struct vhost_dev *dev = container_of(listener, struct vhost_dev,
                                          memory_listener);
     int r;
-    if (!!enable == dev->log_enabled) {
+    if (enable == dev->log_enabled) {
         return 0;
     }
     if (!dev->started) {
--
1.8.3.1