d3d8: fix printf format

[Marcin Baczyński]

---
Pointer difference is long int on 64 bit systems.
This silences GCC warning when configured with --enable-win64.

 dlls/d3d8/device.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/dlls/d3d8/device.c b/dlls/d3d8/device.c
index 11697b2..d5657a3 100644
--- a/dlls/d3d8/device.c
+++ b/dlls/d3d8/device.c
@@ -175,7 +175,7 @@ static DWORD d3d8_allocate_handle(struct d3d8_handle_table *t, void *object, enu
         entry = t->free_entries;
         if (entry->type != D3D8_HANDLE_FREE)
         {
-            ERR("Handle %u(%p) is in the free list, but has type %#x.\n", (entry - t->entries), entry, entry->type);
+            ERR("Handle %lu(%p) is in the free list, but has type %#x.\n", (entry - t->entries), entry, entry->type);
             return D3D8_INVALID_HANDLE;
         }
         t->free_entries = entry->object;
-- 
1.6.6