Multiples index error on Context class

[ehooo]

Describe the bug
A clear and concise description of what the bug is.

To Reproduce
Steps to reproduce the behavior:

1. Create a rule for 'Bytes', 'Str', 'ImportFrom', 'Import' or 'FunctionDef'
2. With the context call to call_args or get_lineno_for_call_arg

Expected behavior
No crack

Bandit version

bandit 1.5.1

Additional context
Also happens with function_def_defaults_qual

[ericwb]

Fixed with #449 449