TYPO3 Core

At creation main BE Module c navFrame without submodules, i have mistake Forbidden and path to connection navScript in which it is visible a mistake. Having seen a file typo3/class.alt_menu_functions.inc-> function getNavFramePrefix I have found a mistake in generating JS of a code:
if ($BE_USER->uc['condensedMode']) {
$prefix=$navFrameScript.$navFrameScriptParam.'&currentSubScript=';
} else {
$prefix='alt_mod_frameset.php?'.
'fW="+top.TS.navFrameWidth+"'.
'&nav="+top.TS.PATH_typo3+"'.rawurlencode($navFrameScript.$navFrameScriptParam).
'&script=';
}

exacly error is here:

$prefix='alt_mod_frameset.php?'.'fW="+top.TS.navFrameWidth+"'. '&nav="+top.TS.PATH_typo3+"'.rawurlencode($navFrameScript.$navFrameScriptParam).'&script=';

this bouble quotes Typo3 insert to the path without substitution JS vars it inserts them as the text

(issue imported from #M1964)