Bug 1342289 Part 2: Re-enable crashtest dom/html/crashtests/795221-3.html. r=heycam

MozReview-Commit-ID: 3demWEDa3Ws

--HG--
extra : rebase_source : a127def77e36dc1981efdcd07681af2bf60bc7b9

dom/html/crashtests/crashtests.list

@@ -55,7 +55,7 @@ load 741218.json
 load 741250.xhtml
 load 795221-1.html
 load 795221-2.html
-skip-if(stylo) load 795221-3.html # bug 1342289
+load 795221-3.html
 load 795221-4.html
 load 795221-5.xml
 load 811226.html