Gijs Vermeulen : quartz: Return E_INVALIDARG when cursor is NULL in IEnumFilters::Skip().

[Alexandre Julliard]

Module: wine
Branch: oldstable
Commit: 49064d4311e948a83e262610054a69bf260fa432
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=49064d4311e948a83e262610054a69bf260fa432

Author: Gijs Vermeulen <gijsvrm at gmail.com>
Date:   Mon Nov 23 17:29:27 2020 +0100

quartz: Return E_INVALIDARG when cursor is NULL in IEnumFilters::Skip().

Signed-off-by: Gijs Vermeulen <gijsvrm at gmail.com>
Signed-off-by: Zebediah Figura <z.figura12 at gmail.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>
(cherry picked from commit 68d03ba8bbeb07116e15373938e511d693346f4a)
Signed-off-by: Michael Stefaniuc <mstefani at winehq.org>

---

 dlls/quartz/filtergraph.c       | 2 +-
 dlls/quartz/tests/filtergraph.c | 6 ++++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/dlls/quartz/filtergraph.c b/dlls/quartz/filtergraph.c
index 1ed41bdcec5..ffd481fb171 100644
--- a/dlls/quartz/filtergraph.c
+++ b/dlls/quartz/filtergraph.c
@@ -313,7 +313,7 @@ static HRESULT WINAPI EnumFilters_Skip(IEnumFilters *iface, ULONG count)
     TRACE("enum_filters %p, count %u.\n", enum_filters, count);
 
     if (!enum_filters->cursor)
-        return S_FALSE;
+        return E_INVALIDARG;
 
     while (count--)
     {
diff --git a/dlls/quartz/tests/filtergraph.c b/dlls/quartz/tests/filtergraph.c
index 62546342097..ab573b74008 100644
--- a/dlls/quartz/tests/filtergraph.c
+++ b/dlls/quartz/tests/filtergraph.c
@@ -677,6 +677,12 @@ static void test_enum_filters(void)
     hr = IEnumFilters_Next(enum1, 1, filters, NULL);
     ok(hr == S_FALSE, "Got hr %#x.\n", hr);
 
+    hr = IEnumFilters_Skip(enum1, 0);
+    ok(hr == E_INVALIDARG, "Got hr %#x.\n", hr);
+
+    hr = IEnumFilters_Skip(enum1, 1);
+    ok(hr == E_INVALIDARG, "Got hr %#x.\n", hr);
+
     IFilterGraph2_AddFilter(graph, filter1, NULL);
     IFilterGraph2_AddFilter(graph, filter2, NULL);