Reverse some logic in cdr_manager, which made it fail to load if the config file existed.

Issue 8777


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@50346 65c4cc65-6c06-0410-ace0-fbb531ad65f3

cdr/cdr_manager.c

@@ -146,7 +146,7 @@ static int load_module(void)
 	int res;
 
 	/* Configuration file */
-	if(loadconfigurationfile())
+	if (!loadconfigurationfile())
 		return AST_MODULE_LOAD_DECLINE;
 	
 	res = ast_cdr_register(name, "Asterisk Manager Interface CDR Backend", manager_log);