Avoid double attribute lookup in HTMLElement::matchesReadWritePseudoClass()

Source/core/html/HTMLElement.cpp

Index: Source/core/html/HTMLElement.cpp
diff --git a/Source/core/html/HTMLElement.cpp b/Source/core/html/HTMLElement.cpp
index 782fe00503477feeb3e081c6adf645978849b80d..e7ae5b4e4d0de69e9275df70e413f895c87f0b67 100644
--- a/Source/core/html/HTMLElement.cpp
+++ b/Source/core/html/HTMLElement.cpp
@@ -935,9 +935,8 @@ bool HTMLElement::matchesReadOnlyPseudoClass() const
 
 bool HTMLElement::matchesReadWritePseudoClass() const
 {
-    if (fastHasAttribute(contenteditableAttr)) {
-        const AtomicString& value = fastGetAttribute(contenteditableAttr);
-
+    const AtomicString& value = fastGetAttribute(contenteditableAttr);
+    if (!value.isNull()) {
         if (value.isEmpty() || equalIgnoringCase(value, "true") || equalIgnoringCase(value, "plaintext-only"))
             return true;
         if (equalIgnoringCase(value, "false"))