reconnect: avoid deadlock if socker error is received during reconnect

If we are reconnecting and the connection is already established we
end up looping forever if there is a socket error before we finish
the login process. Fix this by invoking the reconnect callback if
there is an error and no new reconnect is scheduled.

Signed-off-by: Peter Lieven <pl@kamp.de>

lib/socket.c

@@ -780,6 +780,9 @@ iscsi_service_reconnect_if_loggedin(struct iscsi_context *iscsi)
 		}
 	}
 	if (iscsi->old_iscsi) {
+		if (!iscsi->pending_reconnect) {
+			iscsi_reconnect_cb(iscsi, SCSI_STATUS_ERROR, NULL, NULL);
+		}
 		return 0;
 	}
 	return -1;