phantomjs: Depends on freetype for Linuxbrew
phantomjs: Depends on freetype for Linuxbrew

$ brew linkage phantomjs
Homebrew libraries:
  /gsc/btl/linuxbrew/lib/libfreetype.so.6 (freetype)
Possible undeclared dependencies:
  freetype

Closes Linuxbrew/homebrew-core#1770.

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

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