Bug 1296984 - Fix indentation of child twisty in jit-optimizations-view in RTL locales. r=ntim

--HG--
extra : rebase_source : 8c6e9369c5f5fe9c93be848988195fa2fe7e7ce7

devtools/client/performance/components/jit-optimizations-item.js

@@ -164,7 +164,7 @@ const JITOptimizationsItem = createClass({
     return dom.div(
       {
         className: `optimization-tree-item optimization-tree-item-${type}`,
-        style: { marginLeft: depth * TREE_ROW_HEIGHT }
+        style: { marginInlineStart: depth * TREE_ROW_HEIGHT }
       },
       arrow,
       content