#011266: ezcQueryExpression->in( 'colname', array() ) produces a strange exception message

When running code like this:

$q->select( '*' )
  ->from( 'tablename' )
  ->where( $q->expr->in( 'id', array() ) );

You get the following message:
ezcQueryVariableParameterException: The method 'in' expected at least 2 parameters but only 2 was provided.

This is slightly confusing, the message should state you supplied an empty array.

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PHP Version: (please be specific, like '4.4.3' or '5.1.5')
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