Get rid of NULL, cleanup formatting

tinyxml2.cpp

@@ -2302,11 +2302,11 @@ bool XMLPrinter::VisitEnter( const XMLDocument& doc )
 
 bool XMLPrinter::VisitEnter( const XMLElement& element, const XMLAttribute* attribute )
 {
-    const XMLElement* parentElem = NULL;
-    if (  element.Parent() ) {
-    	parentElem = element.Parent()->ToElement();
+    const XMLElement* parentElem = 0;
+    if ( element.Parent() ) {
+        parentElem = element.Parent()->ToElement();
     }
-    bool compactMode = parentElem ? CompactMode(*parentElem) : _compactMode;
+    const bool compactMode = parentElem ? CompactMode( *parentElem ) : _compactMode;
     OpenElement( element.Name(), compactMode );
     while ( attribute ) {
         PushAttribute( attribute->Name(), attribute->Value() );