small branch window size crashes

[extrawurst]

[ERROR] panic: PanicInfo { payload: Any, message: Some(Trying to access position outside the buffer: x=45, y=13, area=Rect { x: 0, y: 0, width: 45, height: 46 }), location
: Location { file: "/Users/stephan/.cargo/registry/src/github.com-1ecc6299db9ec823/tui-0.12.0/src/buffer.rs", line: 217, col: 9 } }
trace:
   0: backtrace::backtrace::libunwind::trace
             at /Users/stephan/.cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.53/src/backtrace/libunwind.rs:100:5
      backtrace::backtrace::trace_unsynchronized
             at /Users/stephan/.cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.53/src/backtrace/mod.rs:66:5
   1: backtrace::backtrace::trace
             at /Users/stephan/.cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.53/src/backtrace/mod.rs:53:14
   2: backtrace::capture::Backtrace::create
             at /Users/stephan/.cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.53/src/capture.rs:176:9
   3: backtrace::capture::Backtrace::new
             at /Users/stephan/.cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.53/src/capture.rs:140:22
   4: gitui::set_panic_handlers::{{closure}}
             at src/main.rs:329:25
   5: std::panicking::rust_panic_with_hook
             at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:573:17
   6: std::panicking::begin_panic_handler::{{closure}}
             at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:476:9
   7: std::sys_common::backtrace::__rust_end_short_backtrace
             at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:153:18
   8: rust_begin_unwind
             at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:475:5
   9: std::panicking::begin_panic_fmt
             at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:429:5
  10: tui::buffer::Buffer::index_of
             at /Users/stephan/.cargo/registry/src/github.com-1ecc6299db9ec823/tui-0.12.0/src/buffer.rs:217:9
  11: tui::buffer::Buffer::get_mut
             at /Users/stephan/.cargo/registry/src/github.com-1ecc6299db9ec823/tui-0.12.0/src/buffer.rs:184:17
  12: <tui::widgets::clear::Clear as tui::widgets::Widget>::render
             at /Users/stephan/.cargo/registry/src/github.com-1ecc6299db9ec823/tui-0.12.0/src/widgets/clear.rs:32:17
  13: tui::terminal::Frame<B>::render_widget
             at /Users/stephan/.cargo/registry/src/github.com-1ecc6299db9ec823/tui-0.12.0/src/terminal.rs:103:9
  14: <gitui::components::select_branch::SelectBranchComponent as gitui::components::DrawableComponent>::draw
             at src/components/select_branch.rs:62:13
  15: gitui::app::App::draw_popups
             at src/app.rs:626:9
  16: gitui::app::App::draw
             at src/app.rs:205:9
  17: gitui::draw::{{closure}}
             at src/main.rs:190:25
  18: tui::terminal::Terminal<B>::draw
             at /Users/stephan/.cargo/registry/src/github.com-1ecc6299db9ec823/tui-0.12.0/src/terminal.rs:259:9
  19: gitui::draw
             at src/main.rs:189:5
  20: gitui::main
             at src/main.rs:155:13