Fix warnings in 64bit.

diff --git a/include/shellapi.h b/include/shellapi.h
index 3c93737..950eab9 100644
--- a/include/shellapi.h
+++ b/include/shellapi.h
@@ -146,8 +146,8 @@
 
 DECL_WINELIB_TYPE_AW(SHFILEINFO)
 
-DWORD	WINAPI SHGetFileInfoA(LPCSTR,DWORD,SHFILEINFOA*,UINT,UINT);
-DWORD	WINAPI SHGetFileInfoW(LPCWSTR,DWORD,SHFILEINFOW*,UINT,UINT);
+DWORD_PTR	WINAPI SHGetFileInfoA(LPCSTR,DWORD,SHFILEINFOA*,UINT,UINT);
+DWORD_PTR	WINAPI SHGetFileInfoW(LPCWSTR,DWORD,SHFILEINFOW*,UINT,UINT);
 #define  SHGetFileInfo WINELIB_NAME_AW(SHGetFileInfo)
 
 /******************************************