[PATCH 3/4] quartz: fix crash in FilterGraph2_Render

[Miklós Máté]

Note: there are a lot of other places as well where the null pointer handling
is present in the msdn docs but missing in wine.

Signed-off-by: Miklós Máté <mtmkls at gmail.com>
---
 dlls/quartz/filtergraph.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/dlls/quartz/filtergraph.c b/dlls/quartz/filtergraph.c
index a143b05d83..e26eb199c8 100644
--- a/dlls/quartz/filtergraph.c
+++ b/dlls/quartz/filtergraph.c
@@ -1279,6 +1279,9 @@ static HRESULT WINAPI FilterGraph2_Render(IFilterGraph2 *iface, IPin *ppinOut)
 
     TRACE("(%p/%p)->(%p)\n", This, iface, ppinOut);
 
+    if (!ppinOut)
+        return E_POINTER;
+
     if (TRACE_ON(quartz))
     {
         PIN_INFO PinInfo;
-- 
2.11.0