if (!(new_masks = realloc(event_set->masks,
sizeof(enum sp_event) * (event_set->count + 1))))
RETURN_ERROR(SP_ERR_MEM, "Mask array realloc() failed");
if (!(new_masks = realloc(event_set->masks,
sizeof(enum sp_event) * (event_set->count + 1))))
RETURN_ERROR(SP_ERR_MEM, "Mask array realloc() failed");