Fixed WinMain's signature.

diff --git a/libtest/hello.c b/libtest/hello.c
index a897e94..41036cb 100644
--- a/libtest/hello.c
+++ b/libtest/hello.c
@@ -4,7 +4,7 @@
 
 long FAR PASCAL WndProc(HWND, UINT, WPARAM, LPARAM);
 
-int PASCAL WinMain (HANDLE hInstance, HANDLE hPrevInst, LPSTR lpszCmdLine,
+int PASCAL WinMain (HINSTANCE hInstance, HINSTANCE hPrevInst, LPSTR lpszCmdLine,
 			 int nCmdShow)
 {
 	HWND hwnd;