`enum solver_type` inplace of unnamed enum type

[kanihal]

when I was running cython on svm.pyx it was giving this error vision/svm.cpp:1379:72: error: use of enum ‘solver_type’ without previous declaration tic CYTHON_INLINE PyObject* __Pyx_PyInt_From_enum__solver_type(enum solver_type ^ Adding enum solver_type fixed it.