bug: log breaks with log.showSignature = true

[swsnr]

Did you check docs and existing issues?

• I have read all the lazy docs
• I have searched the existing issues of lazy
• I have searched the exsiting issues of the plugin I have a problem with

Neovim version (nvim -v)

0.8.1

Operating system/version

Arch Linux

Describe the bug

:Lazy log fails with the following error when log.showSignature is true in gitconfig.

Error executing vim.schedule lua callback: ...local/share/nvim/lazy/lazy.nvim/lua/lazy/view/render.lua:416: at
tempt to index local 'msg' (a nil value)
stack traceback:
        ...local/share/nvim/lazy/lazy.nvim/lua/lazy/view/render.lua:416: in function 'log'
        ...local/share/nvim/lazy/lazy.nvim/lua/lazy/view/render.lua:401: in function 'tasks'
        ...local/share/nvim/lazy/lazy.nvim/lua/lazy/view/render.lua:384: in function 'plugin'
        ...local/share/nvim/lazy/lazy.nvim/lua/lazy/view/render.lua:231: in function 'section'
        ...local/share/nvim/lazy/lazy.nvim/lua/lazy/view/render.lua:71: in function 'update'
        .../.local/share/nvim/lazy/lazy.nvim/lua/lazy/view/init.lua:124: in function 'fn'
        ...basti/.local/share/nvim/lazy/lazy.nvim/lua/lazy/util.lua:68: in function <...basti/.local/share/nvi
m/lazy/lazy.nvim/lua/lazy/util.lua:67>

Disabling log.showSignature properly shows the log.

Steps To Reproduce

1. git config --global log.showSignature true
2. Run :Lazy log in neovim

Expected Behavior

No error 😉

I don't expect to actually see the signature in Lazy (even though that'd be pretty cool 😇 ) but it'd be helpful if Lazy could disable showSignature for its git log calls.

Repro

[swsnr]

🙏🙏