glibc: Fix error when locating the gcc keg [Linux] (#5631)
glibc: Fix error when locating the gcc keg [Linux] (#5631)

Fix Error: No such file or directory @ realpath_rec -
/home/guest/my_graphviz/bin/gcc-4.8
maxim-belkin/homebrew-core,rwhogg/homebrew-core,LinuxbrewTestBot/homebrew-core,maxim-belkin/homebrew-core,LinuxbrewTestBot/homebrew-core,rwhogg/homebrew-core,Linuxbrew/homebrew-core,Linuxbrew/homebrew-core