Discovered by Skizzerz:

Query: SELECT * FROM globalblocks WHERE () <br />
Function: GlobalBlocking::checkIpsForBlock<br />
Error: 1064 You have an error in your SQL syntax; check the manual that
corresponds to your MySQL server version for the right syntax to use nea
r ')' at line 1 (localhost)<br />

The function should just check that if $conds === array(), return and not bother executing the query.

Version: unspecified
Severity: normal