Merged PR 688231: Add ChooseWorkerIpc to the list of ChooseWorker dispatchers

When we do not find an available worker for an IPC pips, we were inlining ChooseWorkerIpc step and causing a stackoverflow exception. We now add ChooseWorkerIpc to the list of chooseworker dispatchers to avoid inlining.

Author: semihokur

Public/Src/Engine/Scheduler/WorkDispatcher/DispatcherKind.cs

@@ -92,7 +92,7 @@ public static class DispatcherKindHelpers
         /// </summary>
         public static bool IsChooseWorker(this DispatcherKind kind)
         {
-            return kind == DispatcherKind.ChooseWorkerLight || kind == DispatcherKind.ChooseWorkerCacheLookup || kind == DispatcherKind.ChooseWorkerCpu;
+            return kind == DispatcherKind.ChooseWorkerLight || kind == DispatcherKind.ChooseWorkerCacheLookup || kind == DispatcherKind.ChooseWorkerCpu || kind == DispatcherKind.ChooseWorkerIpc;
         }
 
     }