From 926d1bdddc1913eb88bdc68fd79a6449550bcdef Mon Sep 17 00:00:00 2001
From: Simon Montagu <smontagu@smontagu.org>
Date: Sat, 26 Jan 2013 23:35:49 -0800
Subject: [PATCH] Clear the HasDirAuto and HasDirAutoSet flags when setting dir
 to an invalid value. Bug 831287, r=ehsan

---
 content/html/content/src/nsGenericHTMLElement.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/content/html/content/src/nsGenericHTMLElement.cpp b/content/html/content/src/nsGenericHTMLElement.cpp
index 5e51b62ca17..7f0f2d48ab2 100644
--- a/content/html/content/src/nsGenericHTMLElement.cpp
+++ b/content/html/content/src/nsGenericHTMLElement.cpp
@@ -824,6 +824,8 @@ nsGenericHTMLElement::AfterSetAttr(int32_t aNamespaceID, nsIAtom* aName,
       } else {
         ClearHasValidDir();
         ClearHasFixedDir();
+        ClearHasDirAuto();
+        ClearHasDirAutoSet();
         if (NodeInfo()->Equals(nsGkAtoms::bdi)) {
           SetHasDirAuto();
         } else {