Fixed broken FF unit test on linux
Fixed broken FF unit test on linux

danielpunkass/tinymce,blakewallan/tinymce,gencer/tinymce,FernCreek/tinymce,adaptiffdesigns/tinymce,rbecheras/tinymce,leofeyer/tinymce,jtark/tinymce,ikuchmin/tinymce,1099511627776/tinymce,sjbufton/tinymce,tinymce/tinymce,leofeyer/tinymce,nbcp/tinymce,ETSI-CTI/TinySpecMCE,aduth/tinymce,danielpunkass/tinymce,adaptiffdesigns/tinymce,blakewallan/tinymce,tinymce/tinymce,danielpunkass/tinymce,tinymce/tinymce,TeamupCom/tinymce,ikuchmin/tinymce,fillabs/TinySpecMCE,gencer/tinymce,nbcp/tinymce,TeamupCom/tinymce,ETSI-CTI/TinySpecMCE,fillabs/TinySpecMCE,rbecheras/tinymce,FernCreek/tinymce,henrythewasp/tinymce,FernCreek/tinymce,1099511627776/tinymce,jtark/tinymce,sjbufton/tinymce,henrythewasp/tinymce,aduth/tinymce,MediehusetTek/tinymce,MediehusetTek/tinymce