Fix terminated field initialization
Fix terminated field initialization

Previously, the field was not initialized. So, its value is
a random value. As a consequence, the mal_actor_run can terminate
immediately.

Now, the field is initialized to false, as it shuold be.

PS: this can be avoided by using calloc instead of malloc in
mal_actor_new.

gbonnefille/malc,gbonnefille/malc,ccsdsmo/malc,ccsdsmo/malc,gbonnefille/malc,ccsdsmo/malc