gnu-indent: Depends on texinfo [Linux]
gnu-indent: Depends on texinfo [Linux]

Fix WARNING: 'makeinfo' is missing on your system.

Closes Linuxbrew/homebrew-core#9986.

Signed-off-by: Shaun Jackman <b580dab3251a9622aba3803114310c23fdb42900@gmail.com>

maxim-belkin/homebrew-core,rwhogg/homebrew-core,LinuxbrewTestBot/homebrew-core,Linuxbrew/homebrew-core,Linuxbrew/homebrew-core,LinuxbrewTestBot/homebrew-core,maxim-belkin/homebrew-core,rwhogg/homebrew-core