View Compilation Error

0_0_22129908_29007.cpp: In member function 'T cl::graph::ImprovedSAPMaxFlow<T>::operator()(const cl::Graph&, const cl::Graph::EdgeProperty<T>&, int, int, cl::Graph::EdgeProperty<T>*)':
0_0_22129908_29007.cpp:954:30: error: 'iter' was not declared in this scope
                     cur[u] = iter;
                              ^