Tweak rls submodule again

rust-lang · bors · Aug 28, 2017 · Dec 26, 2016 · Jul 5, 2017 · Jul 5, 2017
commit a996d5eec70ba6733e23f2e56e762f58e60bb4ff
diff --git a/src/Cargo.lock b/src/Cargo.lock
diff --git a/src/tools/rls b/src/tools/rls