Update SelectDecorator.php

Class was supporting limit + offset or limit, but only offset does not support
PR #4032
Merge branch 'master' of git://github.com/romulobusatto/zf2 into romulobusatto-master
PR #4032
Merge branch 'romulobusatto-master'
Fix CS issue in unrelated component

- trailing whitespace

Signed-off-by: Ralph Schindler <ralph.schindler@zend.com>
CS Fix applied from develop
Merge branch 'hotfix/db-oracle-cs-fix-master'