Remove unnecessary cast in XMLNode::Value()
diff --git a/tinyxml2.cpp b/tinyxml2.cpp
index e6bb328..cb68ce1 100755
--- a/tinyxml2.cpp
+++ b/tinyxml2.cpp
@@ -646,7 +646,7 @@
 const char* XMLNode::Value() const 

 {

     if ( this->ToDocument() )

-        return ( const char* )0;

+        return 0;

     return _value.GetStr();

 }