quartz: Use '%u' to print GetLastError().
diff --git a/dlls/quartz/videorenderer.c b/dlls/quartz/videorenderer.c
index 246b097..7adf59a 100644
--- a/dlls/quartz/videorenderer.c
+++ b/dlls/quartz/videorenderer.c
@@ -156,7 +156,7 @@
     {
         if (!RegisterClassA(&winclass))
         {
-            ERR("Unable to register window %x\n", GetLastError());
+            ERR("Unable to register window %u\n", GetLastError());
             return FALSE;
         }
         wnd_class_registered = TRUE;