java: fix signature with s:ReadClassPathFile
java: fix signature with s:ReadClassPathFile

Closes https://github.com/neomake/neomake/pull/2202.
Fixes https://github.com/SpaceVim/SpaceVim/issues/2280.

Accidentally broken in 446164299.

codeinabox/neomake,neomake/neomake,nerdrew/neomake,nerdrew/neomake,neomake/neomake