final_suspend (#644)

Author: kennykerr

strings/base_coroutine_foundation.h

@@ -497,6 +497,11 @@ namespace winrt::impl
 
         auto final_suspend() noexcept
         {
+            if (winrt_suspend_handler)
+            {
+                winrt_suspend_handler(this);
+            }
+
             return final_suspend_awaiter{ this };
         }
 

strings/base_coroutine_threadpool.h

@@ -526,6 +526,11 @@ namespace std::experimental
 
             suspend_never final_suspend() const noexcept
             {
+                if (winrt_suspend_handler)
+                {
+                    winrt_suspend_handler(this);
+                }
+
                 return{};
             }