[sr-dev] [kamailio/kamailio] Crash in permissions module (#2151)

[sjthomason]

Hi Victor,
The patch does indeed fix the crash.  I've been looking at `init_child_trusted()` and should it not be safe to call it as written?  This seems to be "safe":

```
	if (!db_url.s) {
		return 0;
	}

	db_handle = perm_dbf.init(&db_url);
	if (!db_handle) {
		LM_ERR("unable to connect database\n");
		return -1;
	}
```

I'm not that familiar with the inner workings of this particular module so perhaps the best fix is the one you suggested.

Best regards,
Spencer


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