Merge 104441 - insertAdjacentHTML doesn't play nice with DocumentFragment

Source/WebCore/html/HTMLElement.cpp

Index: Source/WebCore/html/HTMLElement.cpp
===================================================================
--- Source/WebCore/html/HTMLElement.cpp	(revision 105335)
+++ Source/WebCore/html/HTMLElement.cpp	(working copy)
@@ -595,7 +595,7 @@
 {
     if (equalIgnoringCase(where, "beforeBegin") || equalIgnoringCase(where, "afterEnd")) {
         ContainerNode* parent = element->parentNode();
-        if (parent && parent->isDocumentNode()) {
+        if (parent && !parent->isElementNode()) {
             ec = NO_MODIFICATION_ALLOWED_ERR;
             return 0;
         }