sheepdog: don't leak socket file descriptor upon connection failure

Signed-off-by: Jim Meyering <meyering@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

block/sheepdog.c

diff --git a/block/sheepdog.c b/block/sheepdog.c
index a04ad99..df4f441 100644
--- a/block/sheepdog.c
+++ b/block/sheepdog.c
@@ -485,6 +485,7 @@
             if (errno == EINTR) {
                 goto reconnect;
             }
+            close(fd);
             break;
         }