Uncaught TypeError: Cannot read property 'length' of undefined

[Enter steps to reproduce:]

1. ...
2. ...

**Atom**: 1.46.0 x64
**Electron**: 4.2.7
**OS**: Microsoft Windows 10 Pro
**Thrown From**: [github-source-code](https://github.com/ericadamski/atom-github-source-code) package 0.2.0

### Stack Trace

Uncaught TypeError: Cannot read property 'length' of undefined

```
At C:\Users\iZhenius\.atom\packages\github-source-code\lib\search.etch.js:117

TypeError: Cannot read property 'length' of undefined
at Search.renderSearchField (/packages/github-source-code/lib/search.etch.js:117:24)
at Search.render (/packages/github-source-code/lib/search.etch.js:123:31)
at updateSync (/packages/github-source-code/node_modules/etch/lib/component-helpers.js:107:34)
at /packages/github-source-code/node_modules/etch/lib/component-helpers.js:72:7
at DefaultScheduler.performUpdates (/packages/github-source-code/node_modules/etch/lib/default-scheduler.js:48:34)
```

### Commands

```
-1:08.6.0 github-source-code:toggle (atom-workspace.workspace.scrollbars-visible-always.theme-one-dark-syntax.theme-one-dark-ui)
-0:54.5.0 core:backspace (input.hidden-input)
-0:51.4.0 core:confirm (input.hidden-input)
-0:48.3.0 core:move-down (input.hidden-input)
2x -0:47.9.0 core:confirm (input.hidden-input)
2x -0:47.3.0 core:move-down (input.hidden-input)
3x -0:46.8.0 core:confirm (input.hidden-input)
2x -0:42.6.0 github-source-code:toggle (input.hidden-input)
3x -0:37.4.0 core:backspace (input.hidden-input)
6x -0:33.4.0 core:confirm (input.hidden-input)
-0:15.6.0 github-source-code:toggle (div.panels-item)
```

### Non-Core Packages

```
atom-formatter-jsbeautify 1.1.2
formatter 2.12.4
github-source-code 0.2.0
language-gitignore 0.3.0
language-gradle 0.1.0
language-groovy 0.7.0
language-kotlin 0.5.0
octophus 0.1.1
```