Lazygit: 中文的Commit信息显示不完整

[0fisher]

Describe the bug
在Mac OSX 上，安装了lazygit
cd git目录
直接运行lazygit 打开窗口后，显示的commit message 不完整。

To Reproduce
Steps to reproduce the behavior:

1. Go to 'git目录'
2. See error

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots

Desktop (please complete the following information):

• OS: Mac OSX(10.13.6 )
• Lazygit Version 0.1.55

Additional context
Add any other context about the problem here.

[ponsfrilus]

See #24

[0fisher]

Good