Win32: Fix memory leaks in ActiveX and WebBrowserComponent

modules/juce_gui_extra/native/juce_win32_ActiveXComponent.cpp

@@ -251,6 +251,11 @@ public:
 
     ~Pimpl() override
     {
+        // If the wndproc of the ActiveX HWND isn't set back to it's original
+        // wndproc, then clientSite will leak when control is released
+        if (controlHWND != nullptr)
+            SetWindowLongPtr ((HWND) controlHWND, GWLP_WNDPROC, (LONG_PTR) originalWndProc);
+
         if (control != nullptr)
         {
             control->Close (OLECLOSE_NOSAVE);

modules/juce_gui_extra/native/juce_win32_WebBrowserComponent.cpp

@@ -60,7 +60,10 @@ public:
     ~Win32WebView() override
     {
         if (connectionPoint != nullptr)
+        {
             connectionPoint->Unadvise (adviseCookie);
+            connectionPoint->Release();
+        }
 
         if (browser != nullptr)
             browser->Release();
@@ -91,6 +94,8 @@ public:
                     handler->Release();
                 }
             }
+
+            connectionPointContainer->Release();
         }
 
         JUCE_END_IGNORE_WARNINGS_GCC_LIKE