ZF-10843 removing unnecessary call to _isValid in Zend_View_Helper_HeadScript sync svn r23548
ZF-10843 removing unnecessary call to _isValid in Zend_View_Helper_HeadScript
sync svn r23548

zendframework/zend-view,codeliner/zend-view,ezimuel/zend-view,FabianKoestring/zend-view,Maks3w/zend-view,bfolliot/zend-view,codeliner/zend-view,MadCat34/zend-view,ezimuel/zend-view,MadCat34/zend-view,bfolliot/zend-view,FabianKoestring/zend-view,zendframework/zend-view,Maks3w/zend-view