cel_manager: Don't crash if configuration file is invalid.

The cel_manager module did not properly handle the case where the
configuration file was invalid. The module will now output a warning
message and disable itself if this occurs.

Reported by: Bryan Walters
........

Merged revisions 405581 from http://svn.asterisk.org/svn/asterisk/branches/1.8


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/11@405582 65c4cc65-6c06-0410-ace0-fbb531ad65f3

cel/cel_manager.c

@@ -153,7 +153,12 @@ static int load_config(int reload)
 		return 0;
 	}
 
-	if (!cfg) {
+	if (cfg == CONFIG_STATUS_FILEINVALID) {
+		ast_log(LOG_WARNING, "Configuration file '%s' is invalid. CEL manager Module not activated.\n",
+			CONF_FILE);
+		enablecel = 0;
+		return -1;
+	} else if (!cfg) {
 		ast_log(LOG_WARNING, "Failed to load configuration file. CEL manager Module not activated.\n");
 		enablecel = 0;
 		return -1;