migration: Remove nulling of hostname in migrate_init()

MigrationState->hostname is set to NULL in migrate_init(). This is
redundant because it is already freed and set to NULL in
migrade_fd_cleanup(). Remove it.

Signed-off-by: Avihai Horon <avihaih@nvidia.com>
Reviewed-by: Fabiano Rosas <farosas@suse.de>
Link: https://lore.kernel.org/r/20231231093016.14204-3-avihaih@nvidia.com
Signed-off-by: Peter Xu <peterx@redhat.com>
diff --git a/migration/migration.c b/migration/migration.c
index 2cc7e2a..15dc8aa 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -1588,7 +1588,6 @@
     s->migration_thread_running = false;
     error_free(s->error);
     s->error = NULL;
-    s->hostname = NULL;
     s->vmdesc = NULL;
 
     migrate_set_state(&s->state, MIGRATION_STATUS_NONE, MIGRATION_STATUS_SETUP);