rdma: memory leak RDMAContext::host

It is allocated by g_strdup(), so needs to be freed.
Reviewed-by: NMichael R. Hines <mrhines@us.ibm.com>
Signed-off-by: NIsaku Yamahata <yamahata@private.email.ne.jp>
Signed-off-by: NMichael R. Hines <mrhines@us.ibm.com>
Message-id: 1375584894-9917-8-git-send-email-mrhines@linux.vnet.ibm.com
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

migration-rdma.c

@@ -2097,6 +2097,8 @@ static void qemu_rdma_cleanup(RDMAContext *rdma)
         rdma_destroy_event_channel(rdma->channel);
         rdma->channel = NULL;
     }
+    g_free(rdma->host);
+    rdma->host = NULL;
 }