Bug 1451169 - Use nsStaticAtom* instead of nsStaticAtom** in Element.h. r=baku

And then fix up everything else that needs to change as well.

MozReview-Commit-ID: GDMfERqdQAc

dom/html/HTMLTableSectionElement.cpp

@@ -181,9 +181,9 @@ NS_IMETHODIMP_(bool)
 HTMLTableSectionElement::IsAttributeMapped(const nsAtom* aAttribute) const
 {
   static const MappedAttributeEntry attributes[] = {
-    { &nsGkAtoms::align },
-    { &nsGkAtoms::valign },
-    { &nsGkAtoms::height },
+    { nsGkAtoms::align },
+    { nsGkAtoms::valign },
+    { nsGkAtoms::height },
     { nullptr }
   };