Android: Replaced jni type in JUCE header with generic void* to avoid compilation errors if the user does not include jni.h

modules/juce_gui_basics/native/juce_android_Windowing.cpp

@@ -33,7 +33,7 @@ namespace juce
 
 //==============================================================================
 #if JUCE_MODULE_AVAILABLE_juce_product_unlocking
- extern void juce_inAppPurchaseCompleted (jobject intentData);
+ extern void juce_inAppPurchaseCompleted (void*);
 #endif
 
 //==============================================================================

modules/juce_product_unlocking/in_app_purchases/juce_InAppPurchases.h

@@ -259,7 +259,7 @@ private:
     ListenerList<Listener> listeners;
 
    #if JUCE_ANDROID
-    friend void juce_inAppPurchaseCompleted (jobject);
+    friend void juce_inAppPurchaseCompleted (void*);
    #endif
 
     struct Pimpl;

modules/juce_product_unlocking/native/juce_android_InAppPurchases.cpp

@@ -927,7 +927,7 @@ struct InAppPurchases::Pimpl    : private AsyncUpdater,
 
 
 //==============================================================================
-void juce_inAppPurchaseCompleted (jobject intentData)
+void juce_inAppPurchaseCompleted (void* intentData)
 {
-    InAppPurchases::Pimpl::inAppPurchaseCompleted (intentData);
+    InAppPurchases::Pimpl::inAppPurchaseCompleted (static_cast<jobject> (intentData));
 }