ntdll/tests: Check the default stack information against the exe header.

dlls/ntdll/tests/threadpool.c

@@ -579,6 +579,7 @@ static void CALLBACK simple2_cb(TP_CALLBACK_INSTANCE *instance, void *userdata)
 
 static void test_tp_simple(void)
 {
+    IMAGE_NT_HEADERS *nt = RtlImageNtHeader( NtCurrentTeb()->Peb->ImageBaseAddress );
     TP_POOL_STACK_INFORMATION stack_info;
     TP_CALLBACK_ENVIRON environment;
     TP_CALLBACK_ENVIRON_V3 environment3;
@@ -686,8 +687,8 @@ static void test_tp_simple(void)
     /* test querying and setting the stack size */
     status = pTpQueryPoolStackInformation(pool, &stack_info);
     ok(!status, "TpQueryPoolStackInformation failed: %lx\n", status);
-    ok(stack_info.StackReserve == 2 * 1024 * 1024, "expected default StackReserve, got %ld\n", (ULONG)stack_info.StackReserve);
-    ok(stack_info.StackCommit == 4 * 1024, "expected default StackCommit, got %ld\n", (ULONG)stack_info.StackCommit);
+    ok(stack_info.StackReserve == nt->OptionalHeader.SizeOfStackReserve, "expected default StackReserve, got %Ix\n", stack_info.StackReserve);
+    ok(stack_info.StackCommit == nt->OptionalHeader.SizeOfStackCommit, "expected default StackCommit, got %Ix\n", stack_info.StackCommit);
 
     /* threadpool does not validate the stack size values */
     stack_info.StackReserve = stack_info.StackCommit = 1;