[+] Added IWorkItem::Cancel

Source/Async/WorkItem.cpp

@@ -271,6 +271,12 @@ namespace Aurora::Async
         return finished;
     }
 
+    void WorkItem::Cancel()
+    {
+        AU_LOCK_GUARD(lock);
+        Fail();
+    }
+
     bool WorkItem::HasFailed()
     {
         return failed;
@@ -288,6 +294,11 @@ namespace Aurora::Async
 
     AUKN_SYM AuSPtr<IWorkItem> NewWorkItem(const DispatchTarget_t &worker, const AuSPtr<IWorkItemHandler> &task, bool supportsBlocking)
     {
+        if (!task)
+        {
+            SysPushErrorNested("Constructed workitem with a null task. running on stack and reserve heaps alone?");
+            return {};
+        }
         return AuMakeShared<WorkItem>(worker, task, supportsBlocking);
     }
 }

Source/Async/WorkItem.hpp

@@ -28,6 +28,8 @@ namespace Aurora::Async
         bool BlockUntilComplete() override;
         bool HasFinished() override;
         bool HasFailed() override;
+
+        void Cancel() override;
         
         void RunAsync() override;
         void CancelAsync() override;