Added missing LPDROPFILES definition.

include/shlobj.h

diff --git a/include/shlobj.h b/include/shlobj.h
index 04376d9..0cfb6e2 100644
--- a/include/shlobj.h
+++ b/include/shlobj.h
@@ -587,7 +587,7 @@
   POINT pt;
   BOOL  fNC;
   BOOL  fWide;
-} DROPFILES;
+} DROPFILES, *LPDROPFILES;
 
 #include "poppack.h"