[clangd] Make formatting.test asynchronous again.

This test doesn't rely on the order of asynchronous messages, enable
threads so we have at least some coverage for those code paths.

llvm-svn: 303376

diff --git a/clang-tools-extra/test/clangd/formatting.test b/clang-tools-extra/test/clangd/formatting.test
index 8e98a20..d0a0cd5 100644 (file)
--- a/clang-tools-extra/test/clangd/formatting.test
+++ b/clang-tools-extra/test/clangd/formatting.test
@@ -1,4 +1,4 @@
-# RUN: clangd -run-synchronously < %s | FileCheck %s\r
+# RUN: clangd < %s | FileCheck %s\r
 # It is absolutely vital that this file has CRLF line endings.\r
 #\r
 Content-Length: 125\r