[Orc] Add missing header include for r299611.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@299623 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/unittests/ExecutionEngine/Orc/QueueChannel.h b/unittests/ExecutionEngine/Orc/QueueChannel.h
index 1528ac94a94d3e030f5b1fd3e5a5d621586d1e4d..3d1058a83ebc13c0f7aa35fcb25f068913aa914b 100644 (file)
--- a/unittests/ExecutionEngine/Orc/QueueChannel.h
+++ b/unittests/ExecutionEngine/Orc/QueueChannel.h
@@ -14,6 +14,7 @@
 #include "llvm/Support/Error.h"
 
 #include <queue>
+#include <condition_variable>
 
 namespace llvm {