Fix extend_path() to extend_env().
Fix extend_path() to extend_env().

Commit d8b8ebacccf7 changed extend_path() to extend_env(), but missed a
spot. This fixes it.

Signed-off-by: Chris Dunlop <711c73f64afdce07b7e38039a96d2224209e9a6c@onthe.net.au>

alfredodeza/remoto,ceph/remoto