TYPO3 Core

Due to a typo no entry in the deprecation log is done when using the deprected IMAGE.alttext property.

if ($conf['altText'] || $conf['altText.']) {
$GLOBALS['TSFE']->logDeprecatedTyposcript('IMAGE.alttext');
}

Obviously does not make sense. I corrected the property names in the IF-Condition to lowercase. Additionally I merged the two nested IF-Clauses to one. This also solves the little issue that $conf['altText'] = $conf['alttext']; was assigned even if there is no $conf['alttext'] - an IF-Check is done anyway, so why not include the assignement in there. This should tweak performance a little bit.
(issue imported from #M13623)