[Bug-Candidate]: get_dependencies bug

[l0ca1]

Describe the issue:

test.sol:

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.12;
contract Contract {
    uint256 var_amount;

    function direct_returns(uint256 amount) internal returns (uint256) {
        uint256 _amount = var_amount + amount;
        return _amount;
    }

    function indirect_returns(uint256 amount)
        internal
        returns (uint256 _amount)
    {
        _amount = var_amount + amount;
    }

    function test() external {
        uint256 a = direct_returns(10);
        uint256 b = indirect_returns(10);
    }
}

test.py:

direct_returns_function:Function
indirect_returns_function:Function
test_function:Function
a_variable:Variable
b_variable:Variable

#contract is test.sol:Contract
for function in contract.functions:
    if function.name=="direct_returns":
        direct_returns_function = function
    elif function.name=="indirect_returns":
        indirect_returns_function = function
    elif function.name=="test":
        test_function = function

for vari in test_function.variables_as_dict.values():
    if vari.name=="a":
        a_variable = vari
    elif vari.name=="b":
        b_variable = vari
    

print([vari.name for vari in get_dependencies(a_variable,contract)])
print([vari.name for vari in get_dependencies(b_variable,contract)])

get result:

['TMP_2', 'TMP_0', 'amount', '_amount', 'var_amount']
['TMP_3']

I was expecting the same result (same result length), but here it is different

Code example to reproduce the issue:

``

Version:

0.9.1

Relevant log output:

No response

[0xalpharush]

This may be related to #1450