Typo in variable name: file --> source_file

[cclauss]

Should solve one undefined name in flake8 testing of https://github.com/carnal0wnage/weirdAAL on Python 3.6.3

$ flake8 . --count --select=E901,E999,F821,F822,F823 --show-source --statistics

./libs/aws_lambda.py:135:86: F821 undefined name 'region'
            print("[-] GetAccountSettings allowed for {} but no results [-]" .format(region))
                                                                                     ^
./libs/s3.py:289:54: F821 undefined name 'file'
            print("{} object does not exist.".format(file))
                                                     ^
2     F821 undefined name 'region'
2

[cktricky]

LGTM 👍 thank you