[343189] Attribute case modified for XHTML documents

bundles/org.eclipse.wst.html.core/src/org/eclipse/wst/html/core/internal/document/HTMLDocumentTypeAdapter.java

diff --git a/bundles/org.eclipse.wst.html.core/src/org/eclipse/wst/html/core/internal/document/HTMLDocumentTypeAdapter.java b/bundles/org.eclipse.wst.html.core/src/org/eclipse/wst/html/core/internal/document/HTMLDocumentTypeAdapter.java
index 75d470b..aecadc1 100644
--- a/bundles/org.eclipse.wst.html.core/src/org/eclipse/wst/html/core/internal/document/HTMLDocumentTypeAdapter.java
+++ b/bundles/org.eclipse.wst.html.core/src/org/eclipse/wst/html/core/internal/document/HTMLDocumentTypeAdapter.java
@@ -192,7 +192,7 @@
 	 */
 	public int getAttrNameCase() {
 		if (isXMLType())
-			return LOWER_CASE; // XHTML
+			return super.getAttrNameCase(); // XHTML
 		return this.fFactory.getAttrNameCase();
 	}