Uncomment the typedef in the DECLARE_INTERFACE macro, and get rid of
duplicate typedefs.

diff --git a/include/vfw.h b/include/vfw.h
index ecbc164..b6c46b7 100644
--- a/include/vfw.h
+++ b/include/vfw.h
@@ -35,11 +35,10 @@
 /*****************************************************************************
  * Predeclare the interfaces
  */
-typedef struct IAVIStream IAVIStream,*PAVISTREAM;
-typedef struct IAVIFile IAVIFile,*PAVIFILE;
-typedef struct IGetFrame IGetFrame,*PGETFRAME;
-typedef struct IAVIEditStream IAVIEditStream, *PAVIEDITSTREAM;
-typedef struct IAVIStreaming  IAVIStreaming;
+typedef struct IAVIStream *PAVISTREAM;
+typedef struct IAVIFile *PAVIFILE;
+typedef struct IGetFrame *PGETFRAME;
+typedef struct IAVIEditStream *PAVIEDITSTREAM;
 
 /* Installable Compressor Manager */