Merge branch 'master' of https://github.com/leethomason/tinyxml2

tinyxml2.h

@@ -1574,6 +1574,7 @@ private:
     //void LinkAttribute( XMLAttribute* attrib );
     char* ParseAttributes( char* p, int& curLineNum );
     static void DeleteAttribute( XMLAttribute* attribute );
+    XMLAttribute* CreateAttribute();
 
     enum { BUF_SIZE = 200 };
     int _closingType;
@@ -1751,6 +1752,10 @@ public:
 
     void SetError( XMLError error, const char* str1, const char* str2, int lineNum );
 
+    void ClearError() {
+        SetError(XML_SUCCESS, 0, 0, 0);
+    }
+
     /// Return true if there was an error parsing the document.
     bool Error() const {
         return _errorID != XML_SUCCESS;