Another attempt at fixing win32 plugin key hook loops.

modules/juce_audio_plugin_client/utility/juce_WindowsHooks.h

@@ -34,7 +34,6 @@ namespace
 {
     static HHOOK mouseWheelHook = 0, keyboardHook = 0;
     static int numHookUsers = 0;
-    static bool keyboardHookReentrant = false;
 
     struct WindowsHooks
     {
@@ -90,14 +89,10 @@ namespace
 
         static LRESULT CALLBACK keyboardHookCallback (int nCode, WPARAM wParam, LPARAM lParam)
         {
-            if (keyboardHookReentrant)
-                return 1;
-
-            ScopedValueSetter<bool> setter (keyboardHookReentrant, true, false);
-
             MSG& msg = *(MSG*) lParam;
 
-            if (nCode == HC_ACTION && offerKeyMessageToJUCEWindow (msg))
+            if (nCode == HC_ACTION && wParam == PM_REMOVE
+                 && offerKeyMessageToJUCEWindow (msg))
             {
                 zerostruct (msg);
                 msg.message = WM_USER;