human
Solve the following python programming problem given the following code:
def _wrap_fn_for_legacy(dispatch_descriptor, fn, argspec) : 
    for (since, argnames, conv) in dispatch_descriptor.legacy_signatures : 
        if (argnames [(- 1)] == '**kw') : 
            has_kw = True 
            argnames = argnames [0 : (- 1)] 
else : 
            has_kw = False 
if ((len (argnames) == len (argspec.args)) and (has_kw is bool (argspec.keywords))) : 
            if conv : 
                assert (not has_kw) 
                def wrap_leg(* args) : 
                    return fn (* conv (* args)) 
else : 
                def wrap_leg(* args, **kw) : 
                    argdict = dict (zip (dispatch_descriptor.arg_names, args)) 
                    args = [argdict [name] for name in argnames] 
                    if has_kw : 
                        return fn (* args, ** kw) 
else : 
                        return fn (* args) 
return dispatch_descriptor 
else : 
        return fn 

    
    

    Fix the buggy line: return dispatch_descriptor
assistant
#Here is Python program to fix the buggy line: return dispatch_descriptor
.

return def wrap_leg(