v2.2.1, multiple skipping of whitespace

[Simon Harrison]

Seems in the method below whitespace is skipped twice:

TiXmlNode* TiXmlNode::Identify( const char* p )
{
    TiXmlNode* returnNode = 0;

    p = SkipWhiteSpace( p );
    if( !p || !*p || *p != '<' )
    {
        return 0;
    }

    TiXmlDocument* doc = GetDocument();
    p = SkipWhiteSpace( p );

    if ( !p || !*p )
    {
        return 0;
    }