clang-format: update 2018-12-18 bottle for Linuxbrew.
clang-format: update 2018-12-18 bottle for Linuxbrew.

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