human
Solve the following python programming problem given the following code:
@ classmethod 
def call(cls, project, target, args = (), start = None, prototype = None, **kwargs) : 
    '
        Calls a function in the binary, returning a PathGroup with the call set up.

        :param project:     A Project instance.
        :type  project:     angr.project.Project
        :param target:      Address of function to call.
        :param args:        Arguments to call the function with.
        :param start:       Optional, path (or paths) to start the call with.
        :param prototype:   Optional, A SimTypeFunction to typecheck arguments against.
        :param kwargs:      Any other keyword args will be passed to the PathGroup constructor.
        :returns:           A PathGroup calling the function.
        :rtype:             PathGroup
        ' 
    fake_return_addr = project._extern_obj.get_pseudo_addr ('FAKE_RETURN_ADDR') 
    if (not project.is_hooked (fake_return_addr)) : 
        project.hook (fake_return_addr, CallReturn) 
cc = simuvex.DefaultCC [project.arch.name] (project.arch) 
    active_paths = [] 
    if (start is None) : 
        active_paths.append (project.factory.path (addr = target)) 
else : 
        if hasattr (start, '__iter__') : 
            active_paths.extend (start) 
else : 
            active_paths.append (start) 
ret_addr = claripy.BVV (fake_return_addr, project.arch.bits) 
    def fix_arg(st, arg) : 
        if isinstance (arg, str) : 
            ptr = st.libc.heap_location 
            st.memory.store (ptr, st.se.BVV (arg, st.arch.bits)) 
            st.memory.store ((ptr + len (arg)), st.se.BVV (0, 8)) 
            st.libc.heap_location += (len (arg) + 1) 
            return ptr 
else : 
            if isinstance (arg, (tuple, list)) : 
                fixed_entries = [fix_arg (st, entry) for entry in arg] 
                cur_ptr = start_ptr = st.libc.heap_location 
                for entry in fixed_entries : 
                    st.memory.store (cur_ptr, entry, endness = st.arch.memory_endness) 
                    cur_ptr += entry.length...

    
    

    Fix the buggy line: fixed_args = [fix_arg (p.state, ret_addr) for arg in args]
assistant
#Here is Python program to fix the buggy line: fixed_args = [fix_arg (p.

fixed_args = [fix_arg (p.state, arg) for arg in args]