Describe the bug
gx opens curl result in browser rather than opening link in browser

To Reproduce
Detailed steps to reproduce the behavior:

1. Run macvim
2. Push gx

Expected behavior
It should open browser

Environment (please complete the following information):
Latest OSX

mvim --version
VIM - Vi IMproved 8.1 (2018 May 18, compiled Jul 21 2019 22:54:00)
macOS version
Included patches: 1-1722
Compiled by Homebrew