dplayx/tests: Use correct integral type.

Signed-off-by: Eric Pouech <eric.pouech@gmail.com>
Signed-off-by: Alistair Leslie-Hughes <leslie_alistair@hotmail.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>

dlls/dplayx/tests/dplayx.c

@@ -6864,7 +6864,8 @@ done:
 /* taken from programs/winetest/main.c */
 static BOOL is_stub_dll(const char *filename)
 {
-    DWORD size, ver;
+    UINT size;
+    DWORD ver;
     BOOL isstub = FALSE;
     char *p, *data;