Revert "Bug 251786 - Make XMLContentDescriber INDETERMINATE on parse errors"

This reverts commit b97854a13c94a33aa7c3af146710d3ea0c539897.

Change-Id: I5f3cb271ae6f848a5aee665d7fc537441e59aee5

bundles/org.eclipse.core.contenttype/src/org/eclipse/core/runtime/content/XMLContentDescriber.java

diff --git a/bundles/org.eclipse.core.contenttype/src/org/eclipse/core/runtime/content/XMLContentDescriber.java b/bundles/org.eclipse.core.contenttype/src/org/eclipse/core/runtime/content/XMLContentDescriber.java
index 9fcbc07..35ca74e 100644
--- a/bundles/org.eclipse.core.contenttype/src/org/eclipse/core/runtime/content/XMLContentDescriber.java
+++ b/bundles/org.eclipse.core.contenttype/src/org/eclipse/core/runtime/content/XMLContentDescriber.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2004, 2020 IBM Corporation and others.
+ * Copyright (c) 2004, 2010 IBM Corporation and others.
  *
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
@@ -122,7 +122,7 @@
 		if (fullXMLDecl == null || !fullXMLDecl.booleanValue())
 			return INDETERMINATE;
 		if (description == null)
-			return INDETERMINATE;
+			return VALID;
 		String charset = (String) properties.get(CHARSET);
 		if (description.isRequested(IContentDescription.CHARSET)) {
 			if (charset != null && !isCharsetValid(charset))