Don't forward declare wxWindow in Audacity.h

src/Audacity.h

@@ -88,7 +88,4 @@
                               AUDACITY_QUOTE( AUDACITY_MODLEVEL )
 #endif
 
-
-class wxWindow;
-
 #endif // __AUDACITY_H__

src/Benchmark.h

@@ -11,6 +11,7 @@
 #ifndef __AUDACITY_BENCHMARK__
 #define __AUDACITY_BENCHMARK__
 
+class wxWindow;
 class AudacityProject;
 
 void RunBenchmark( wxWindow *parent, AudacityProject &project );

src/LangChoice.h

@@ -16,6 +16,7 @@
 #define __AUDACITY_LANG_CHOICE__
 
 class wxString;
+class wxWindow;
 
 wxString ChooseLanguage(wxWindow *parent);
 

src/TempDirectory.h

@@ -14,6 +14,8 @@
 #include "Audacity.h"
 #include "audacity/Types.h"
 
+class wxWindow;
+
 namespace TempDirectory
 {
    wxString TempDir();

src/widgets/Warning.h

@@ -15,6 +15,7 @@
 
 #include <wx/defs.h>
 class wxString;
+class wxWindow;
 class TranslatableString;
 
 // "Don't show this warning again"