Fix for "warning: unexpected connection from UID ..."

This warning is currently a fatal error.  The code attempts
to retry the accept call, but because we don't reset sock = -1
the retry doesn't happen and it dies anyway.

Set sock = -1 so the retry attempt can happen.
(cherry picked from commit fb4ec82d97f71963ea7f830cb0bc38abefcbac99)

1 files changed, 1 insertions, 0 deletions

diff --git a/src/guestfs.c b/src/guestfs.c
index e235fdcd..ed514dce 100644
--- a/src/guestfs.c
+++ b/src/guestfs.c
@@ -1405,6 +1405,7 @@ guestfs__launch (guestfs_h *g)
                  "libguestfs: warning: unexpected connection from UID %d to port %d\n",
                  uid, null_vmchannel_sock);
         close (sock);
+        sock = -1;
         continue;
       }
     }