app_adsiprog: Fix possible NULL dereference.

get_token can return NULL, but process_token uses this result without
checking for NULL; as elsewhere, check for a NULL result to avoid
possible NULL dereference.

Resolves: #1419

apps/app_adsiprog.c

@@ -848,7 +848,10 @@ static int onevent(char *buf, char *name, int id, char *args, struct adsi_script
 			return 0;
 		}
 		/* Process 'in' things */
-		tok = get_token(&args, script, lineno);
+		if (!(tok = get_token(&args, script, lineno))) {
+			ast_log(LOG_WARNING, "Missing state name at line %d of %s\n", lineno, script);
+			return 0;
+		}
 		if (process_token(sname, tok, sizeof(sname), ARG_STRING)) {
 			ast_log(LOG_WARNING, "'%s' is not a valid state name at line %d of %s\n", tok, lineno, script);
 			return 0;

main/audiohook.c

@@ -632,7 +632,7 @@ void ast_audiohook_detach_list(struct ast_audiohook_list *audiohook_list)
 		}
 		if (audiohook_list->out_translate[i].trans_pvt) {
 			ast_translator_free_path(audiohook_list->out_translate[i].trans_pvt);
-			ao2_cleanup(audiohook_list->in_translate[i].format);
+			ao2_cleanup(audiohook_list->out_translate[i].format);
 		}
 	}
 

main/manager.c

@@ -5524,6 +5524,9 @@ static int action_presencestate(struct mansession *s, const struct message *m)
 	}
 	astman_append(s, "\r\n");
 
+	ast_free(subtype);
+	ast_free(message);
+
 	return 0;
 }