Fix crash upon exiting interactive mode if there is no current database.

[sjamesr]

Type of change

• ✅ Bug fix (non-breaking change which fixes an issue)

Testing strategy

Tested manually.

Checklist:

• ✅ I have read the CONTRIBUTING document. [REQUIRED]
• ✅ My code follows the code style of this project. [REQUIRED]
• ✅ All new and existing tests passed. [REQUIRED]
• ✅ I have compiled and verified my code with -DWITH_ASAN=ON. [REQUIRED]

[droidmonkey]

I thought this was already fixed in the 2.5.2 branch. See #3889

[sjamesr]

It doesn't look like it, I can reproduce the issue on release/2.5.2.

…

On Fri, Nov 29, 2019 at 3:28 PM Jonathan White ***@***.***> wrote: I thought this was already fixed in the 2.5.2 branch — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#3952?email_source=notifications&email_token=ABDNGAZAJMBL7I4VIGJGX4LQWGQQRA5CNFSM4JTD2UN2YY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOEFPVACA#issuecomment-559894536>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABDNGA2GQKZ7YWJYFYZJEC3QWGQQRANCNFSM4JTD2UNQ> .

[sjamesr]

@droidmonkey #3889 actually introduces this problem