Catch exception when accessing Application::Current in WindowsRTPlatformEventHandler deconstructor like in the constructor as both have the same risk of throwing the exception (#1072)

Co-authored-by: Lalit Kumar Bhasin <[email protected]>

Author: j388923r

lib/shared/WindowsRTPlatformEventHandler.cpp

@@ -63,19 +63,26 @@ namespace Microsoft {
 
                 PlatformEventHandler::~PlatformEventHandler()
                 {
-                    if (this->m_suspendToken.Value != 0)
+                    try
                     {
-                        Application::Current->Suspending -= this->m_suspendToken;
-                    }
+                        if (this->m_suspendToken.Value != 0)
+                        {
+                            Application::Current->Suspending -= this->m_suspendToken;
+                        }
 
-                    if (this->m_resumeToken.Value != 0)
-                    {
-                        Application::Current->Resuming -= this->m_resumeToken;
-                    }
+                        if (this->m_resumeToken.Value != 0)
+                        {
+                            Application::Current->Resuming -= this->m_resumeToken;
+                        }
 
-                    if (this->m_unhandledExceptionToken.Value != 0)
+                        if (this->m_unhandledExceptionToken.Value != 0)
+                        {
+                            Application::Current->UnhandledException -= this->m_unhandledExceptionToken;
+                        }
+                    }
+                    catch (Exception^ e)
                     {
-                        Application::Current->UnhandledException -= this->m_unhandledExceptionToken;
+                        // Access to Application::Current can generate COM exceptions.
                     }
                 }