One error happened when setting Space as Log Delimiter.

[christinebao]

Steps to reproduce:

1. Log in Site Administrator
   
2. Configure Logs->Set Space as Log Delimiter->Save
   

One error happened:
Invalid argument(s):[1] =""The string was trimmed and it's size now differs from the original.

Diagnosis:
This defect is caused by a submission on Oct 14, 2006 about Configuration.cpp, Revision 883: MG408 (Security: Web Admin vulnerable to cross-site scripting attacks). It added a check when validate configuration and space is not allowed.

Fix:
It's unnecessary to filter space.