event/Call: signal the calling thread

Fixes regression from commit 018f4155.

1 files changed, 5 insertions, 0 deletions

diff --git a/src/event/Call.cxx b/src/event/Call.cxx
index e8343f606..c9f619472 100644
--- a/src/event/Call.cxx
+++ b/src/event/Call.cxx
@@ -53,6 +53,11 @@ public:
 private:
 	virtual void RunDeferred() override {
 		f();
+
+		mutex.lock();
+		done = true;
+		cond.signal();
+		mutex.unlock();
 	}
 };