tests: fix test build
The DISPATCH_SIZEOF_PTR caused a test to go down the wrong path. This
fixes the test and accounts for the Windows 64 bit case as well (which
is not a LP64 environment).
diff --git a/tests/dispatch_queue_finalizer.c b/tests/dispatch_queue_finalizer.c
index 9c16e7e..e75733f 100644
--- a/tests/dispatch_queue_finalizer.c
+++ b/tests/dispatch_queue_finalizer.c
@@ -50,7 +50,7 @@
{
dispatch_test_start("Dispatch Queue Finalizer");
-#if DISPATCH_SIZEOF_PTR == 8
+#if defined(__LP64__) || defined(_WIN64)
ctxt_magic = (void*)((uintptr_t)arc4random() << 32 | arc4random());
#else
ctxt_magic = (void*)arc4random();
