better syncThroughAsync

dileping · dileping · commit 0acb0dc69014 · 2016-02-23T10:05:39.000+02:00
diff --git a/ExecutionContext/ExecutionContext.swift b/ExecutionContext/ExecutionContext.swift
@@ -132,10 +132,8 @@ extension ExecutionContextType {
         let sema = Semaphore()
         
         async {
-            defer {
-                sema.signal()
-            }
             result = materialize(task)
+            sema.signal()
         }
         
         sema.wait()
