Bug 873229 - Fix ESlint failure. CLOSED TREE

dom/tests/mochitest/bugs/file_bug873229.js

@@ -1,3 +1,6 @@
 // This is a script that will let you get an exception thrown by
 // calling bar() with no arguments, say.
-var foo = "Some string"; function bar(x) { x.trySomething(); }
+var foo = "Some string";
+function bar(x) {
+  x.trySomething();
+}