[Sass] [SCSS] Fix support for unknown directives with blocks.
[Sass] [SCSS] Fix support for unknown directives with blocks.

stewx/sass,nazar-pc/haml,tenderlove/sass,haml/haml,tangposmarvin/sass,hcatlin/sass,haml/haml,antonifs/sass,liquidmetal/sass,JuanitoFatas/sass,OrenBochman/sass,dg1dd1ngs/haml,Andrey-Pavlov/sass,srinivashappy/sass,oss-practice/sass,xzyfer/sass,schneems/sass,JuanitoFatas/sass,zaru/sass,14113/sass,modulexcite/sass,danielfein/sass,nicklima/sass,Industrys/sass,macressler/haml,Nzaga/sass,PMArtz92/sass,Nzaga/sass,saper/sass,nazar-pc/haml,chriseppstein/sass,StephanieMak/sass,rammy7219/sass,chriseppstein/haml,macressler/haml,danielfein/sass,PMArtz92/sass,hcatlin/sass,rammy7219/sass,jaroot32/sass,amitsuroliya/sass,liquidmetal/sass,srawlins/sass,sideci-sample/sideci-sample-haml,haml/haml,saper/sass,concord-consortium/haml,xzyfer/sass,amatsuda/haml,Galactix/sass,dylannnn/sass,Galactix/sass,cmpereirasi/sass,antonifs/sass,amitsuroliya/sass,jaroot32/sass,keithpitty/haml,chriseppstein/haml,uniba/hamldoc_ja,nickg33/sass,ridixcr/sass,haml/haml,StephanieMak/sass,MetaAshley/sass,tangposmarvin/haml,stanhu/haml,Anshdesire/sass,Ahnita/sass,schneems/sass,HugoRLopes/sass,Anshdesire/sass,srinivashappy/sass,modulexcite/sass,Iamronan/sass,Iamronan/sass,zaru/sass,cmpereirasi/sass,dg1dd1ngs/haml,lmetla/sass,briangonzalez/sass,HugoRLopes/sass,askl56/sass,stanhu/haml,Ahnita/sass,baiyanghese/sass,nickg33/sass,keithpitty/haml,srawlins/sass,nicklima/sass,DanteKaris/sass,Industrys/sass,tangposmarvin/haml,tangposmarvin/sass,OrenBochman/sass,ridixcr/sass,DanteKaris/sass,MetaAshley/sass,lmetla/sass,stewx/sass,Andrey-Pavlov/sass,dylannnn/sass,askl56/sass