Fix DInput mouse acquisition

[Lionel Ulmer <lionel.ulmer@free.fr>]

I really wonder for how long DInput was broken... Anyway, I hope I did not
do anything wrong by using GetModuleHandle(NULL) to get the handle of the
DInput DLL.

Now the mouse works again in the demo for Populous The Beginning (but the
graphics are completely borken when that happens).

Changelog:
 Fix mouse acquisition in DInput.

-- 
		 Lionel Ulmer - http://www.bbrox.org/
--- ../wine_base/dlls/dinput/mouse/main.c	Tue Jul 23 20:39:11 2002
+++ dlls/dinput/mouse/main.c	Sat Dec 21 18:14:59 2002
@@ -527,7 +527,7 @@
     /* Install our mouse hook */
     if (This->dwCoopLevel & DISCL_EXCLUSIVE)
       ShowCursor(FALSE); /* hide cursor */
-    This->hook = SetWindowsHookExW( WH_MOUSE_LL, dinput_mouse_hook, 0, 0 );
+    This->hook = SetWindowsHookExA( WH_MOUSE_LL, dinput_mouse_hook, GetModuleHandleA(NULL), 0 );
 
     /* Get the window dimension and find the center */
     GetWindowRect(This->win, &rect);