Application panic/crash when scrolling the list

[arsalan86]

The application panicked as soon as i tried to scroll the list of issues. I haven't been able to reproduce the issue.

The application panicked (crashed).
Message:  called `Option::unwrap()` on a `None` value
Location: /Users/arsalanpirzada/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/lt-0.0.1/src/widgets/issue_list.rs:85

Backtrace omitted. Run with RUST_BACKTRACE=1 environment variable to display it.
Run with RUST_BACKTRACE=full to include source snippets.

[markmarkoh]

@arsalan86 Thanks! I had an unsafe check when yanking or opening in linear, I was able to fix in d015757 and push to crates.