Unbreak the RLS

Xanewok · Xanewok · commit 34d817c30b07 · 2019-01-02T22:00:44.000+01:00
Breakage was due to rust-lang#55937, which seemed to introduce a regression (tracked over at rust-lang#57280).
diff --git a/src/tools/rls b/src/tools/rls
@@ -1 +1 @@
-Subproject commit 6f5e4bba7b1586fca6e0ea7724cadb5683b2f308
+Subproject commit cdc2464c2fdbe7177c11a48d3e42d760f0066fcc
