Add parenthesis to fix "&& within ||" warning on OS X

Core/Contents/Source/tinyxmlparser.cpp

@@ -354,7 +354,7 @@ const char* TiXmlBase::SkipWhiteSpace( const char* p, TiXmlEncoding encoding )
 	}
 	else
 	{
-		while ( *p && IsWhiteSpace( *p ) || *p == '\n' || *p =='\r' )
+		while ( *p && (IsWhiteSpace( *p ) || *p == '\n' || *p =='\r') )
 			++p;
 	}