fix clang-cl compilation

Fixes:

error: invalid bitwise operation between different enumeration types

Signed-off-by: Rosen Penev <rosenp@gmail.com>

xmpsdk/src/ParseRDF.cpp

@@ -590,7 +590,7 @@ FixupQualifiedNode ( XMP_Node * xmpParent )
 	// value node's children to be the parent's children. Delete the now useless value node.
 	
 	XMP_Assert ( xmpParent->options & (kXMP_PropValueIsStruct | kRDF_HasValueElem) );
-	xmpParent->options &= ~ (kXMP_PropValueIsStruct | kRDF_HasValueElem);
+	xmpParent->options &= ~ (static_cast<unsigned long>(kXMP_PropValueIsStruct) | static_cast<unsigned long>(kRDF_HasValueElem));
 	xmpParent->options |= valueNode->options;
 	
 	xmpParent->value.swap ( valueNode->value );

xmpsdk/src/XMPCore_Impl.cpp

@@ -948,7 +948,7 @@ FindQualifierNode	( XMP_Node *		parent,
 	
 	if ( (qualNode == 0) && createNodes ) {
 
-		qualNode = new XMP_Node ( parent, qualName, (kXMP_PropIsQualifier | kXMP_NewImplicitNode) );
+		qualNode = new XMP_Node ( parent, qualName, (static_cast<unsigned long>(kXMP_PropIsQualifier) | static_cast<unsigned long>(kXMP_NewImplicitNode)) );
 		parent->options |= kXMP_PropHasQualifiers;
 
 		const bool isLang 	 = XMP_LitMatch ( qualName, "xml:lang" );