AAX: Fixed some compiler warnings

modules/juce_audio_plugin_client/AAX/juce_AAX_Wrapper.cpp

@@ -41,6 +41,9 @@
  #pragma clang diagnostic ignored "-Wnon-virtual-dtor"
  #pragma clang diagnostic ignored "-Wsign-conversion"
  #pragma clang diagnostic ignored "-Wextra-semi"
+ #if __has_warning("-Wpragma-pack")
+  #pragma clang diagnostic ignored "-Wpragma-pack"
+ #endif
 #endif
 
 #ifdef _MSC_VER